{"id":"us-ca","slug":"california","name":"California","license":"CC-BY-4.0","placeNode":"/places/us-ca.json","construction":{"reviewStatus":"live","applications":[{"id":"cwuic-2025-california","title":"California 2025 CWUIC mapped-area application","instrumentId":"cwuic-2025","placeId":"us-ca","status":"active","geographicScope":"mapped-area","scopeSummary":"California applies 2025 CWUIC Chapter 5 to new buildings in mapped State Responsibility Area fire-hazard zones and in locally designated High and Very High zones; the official map, permit facts, any local amendment, and the enforcing agency still govern a project.","effectiveOn":"2026-01-01T00:00:00.000Z","requirementIds":["cwuic-2025-class-a-roof-test-path","cwuic-2025-exterior-glazing-tempered","cwuic-2025-nfpa-252-exterior-door","cwuic-2025-noncombustible-enclosed-open-eave","cwuic-2025-noncombustible-exterior-wall","cwuic-2025-roof-profile-closures","cwuic-2025-roof-valley-flashing","cwuic-2025-sfm-12-7a-1-exterior-door","cwuic-2025-sfm-12-7a-1-exterior-wall","cwuic-2025-sfm-12-7a-3-horizontal-underside","cwuic-2025-astm-e2886-vent","cwuic-2025-one-hour-exterior-wall"],"requirementCoverage":"partial","requirementCoverageSummary":"These 12 rows normalize exact Chapter 5 product semantics that the current catalog can prove. They are not full Chapter 5 normalization; gutters, underfloor enclosure, deck assemblies, accessory structures, alternative glazing and door paths, installation, and local amendments remain outside this cross-section.","requirementScopes":[{"requirementId":"cwuic-2025-class-a-roof-test-path","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This tested roof-assembly path applies only after the official map, permit facts, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.2"]},{"requirementId":"cwuic-2025-exterior-glazing-tempered","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This tempered multilayered-glazing path applies only after the official map, permit facts, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.8"]},{"requirementId":"cwuic-2025-nfpa-252-exterior-door","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This NFPA 252 exterior-door path applies only after the official map, permit facts, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.9"]},{"requirementId":"cwuic-2025-noncombustible-enclosed-open-eave","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This noncombustible eave path applies only after the official map, permit facts, exact eave condition, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.3","504.3.1"]},{"requirementId":"cwuic-2025-noncombustible-exterior-wall","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This noncombustible wall path applies only after the official map, permit facts, assembly extent, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.5","504.5.2"]},{"requirementId":"cwuic-2025-roof-profile-closures","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This roof-profile closure applies only after the official map, permit facts, roof profile and deck, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.2.1.1","504.2.1.2"]},{"requirementId":"cwuic-2025-roof-valley-flashing","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This roof-valley metal path applies only after the official map, permit facts, full underlayment detail, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.2.2"]},{"requirementId":"cwuic-2025-sfm-12-7a-1-exterior-door","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This SFM 12-7A-1 exterior-door surface path applies only after the official map, permit facts, exact listed model and installation, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.9"]},{"requirementId":"cwuic-2025-sfm-12-7a-1-exterior-wall","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This SFM 12-7A-1 exterior-wall assembly path applies only after the official map, permit facts, exact listed assembly and installation, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.5"]},{"requirementId":"cwuic-2025-sfm-12-7a-3-horizontal-underside","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This SFM 12-7A-3 underside path applies only after the official map, permit facts, exact eave or projection condition and listed installation, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.3","504.7","504.7.1"]},{"requirementId":"cwuic-2025-astm-e2886-vent","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This ASTM E2886 vent path applies only after the official map, permit facts, exact vent location and listed installation, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.10","504.10.1"]},{"requirementId":"cwuic-2025-one-hour-exterior-wall","scopeKeys":["applicable-new-building-in-mapped-area"],"scopeSummary":"This one-hour exterior-side wall path applies only after the official map, permit facts, full listed assembly, local amendments, and enforcing agency place the new building within Chapter 5.","sourceSections":["504.5"]}],"map":{"status":"linked-official-tool","summary":"CAL FIRE's official statewide viewer accepts an address and displays State and Local Responsibility Area fire-hazard zones; the local jurisdiction remains the source for an adopted Local Responsibility Area designation and project decision.","url":"https://experience.arcgis.com/experience/5065c998b4b0462f9ec3c6c226c610a9","source":{"title":"Fire Hazard Severity Zones","url":"https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/fire-hazard-severity-zones","publisher":"CAL FIRE Office of the State Fire Marshal","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},"projectTriggers":[{"summary":"OSFM describes the construction requirements as applying to new buildings with a building-permit application in the named State and Local Responsibility Area fire-hazard zones; repair, replacement, alteration, and local-amendment questions still require the enforcing agency.","sourceSections":["Application Date and Where Required","Ignition Resistant Wildland-Urban-Interface Standards"],"source":{"title":"Building in the Wildland","url":"https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/building-in-the-wildland","publisher":"CAL FIRE Office of the State Fire Marshal","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}}],"supportingSources":[{"title":"2025 California Building Standards Code publication and effective date","url":"https://www.dgs.ca.gov/bsc/codes","publisher":"California Building Standards Commission","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z","documentDate":"2025-07-01T00:00:00.000Z"},{"title":"Fire Hazard Severity Zones","url":"https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/fire-hazard-severity-zones","publisher":"CAL FIRE Office of the State Fire Marshal","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"2025 California Wildland-Urban Interface Code construction notes","url":"https://mccmeetingspublic.blob.core.usgovcloudapi.net/truckeeca-meet-b4e3431e34524152945f1977841011c4/ITEM-Attachment-001-59998400eff64dacbed9b4337d86e20a.pdf","publisher":"Town of Truckee public record","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}],"unresolvedPredicates":["official-hazard-map","project-type","official-confirmation"],"source":{"title":"Building in the Wildland","url":"https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/building-in-the-wildland","publisher":"CAL FIRE Office of the State Fire Marshal","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-27T00:00:00.000Z"}],"localApplications":[],"requirements":[{"id":"cwuic-2025-astm-e2886-vent","instrumentId":"cwuic-2025","shortName":"California ASTM E2886 vent","url":"/requirements/cwuic-2025-astm-e2886-vent/"},{"id":"cwuic-2025-class-a-roof-test-path","instrumentId":"cwuic-2025","shortName":"California Class A roof test path","url":"/requirements/cwuic-2025-class-a-roof-test-path/"},{"id":"cwuic-2025-exterior-glazing-tempered","instrumentId":"cwuic-2025","shortName":"California multipane + tempered glazing","url":"/requirements/cwuic-2025-exterior-glazing-tempered/"},{"id":"cwuic-2025-nfpa-252-exterior-door","instrumentId":"cwuic-2025","shortName":"California NFPA 252 20-minute door","url":"/requirements/cwuic-2025-nfpa-252-exterior-door/"},{"id":"cwuic-2025-noncombustible-enclosed-open-eave","instrumentId":"cwuic-2025","shortName":"California noncombustible eave","url":"/requirements/cwuic-2025-noncombustible-enclosed-open-eave/"},{"id":"cwuic-2025-noncombustible-exterior-wall","instrumentId":"cwuic-2025","shortName":"California noncombustible wall","url":"/requirements/cwuic-2025-noncombustible-exterior-wall/"},{"id":"cwuic-2025-one-hour-exterior-wall","instrumentId":"cwuic-2025","shortName":"California one-hour exterior wall","url":"/requirements/cwuic-2025-one-hour-exterior-wall/"},{"id":"cwuic-2025-roof-profile-closures","instrumentId":"cwuic-2025","shortName":"California roof-profile closures","url":"/requirements/cwuic-2025-roof-profile-closures/"},{"id":"cwuic-2025-roof-valley-flashing","instrumentId":"cwuic-2025","shortName":"California roof-valley flashing","url":"/requirements/cwuic-2025-roof-valley-flashing/"},{"id":"cwuic-2025-sfm-12-7a-1-exterior-door","instrumentId":"cwuic-2025","shortName":"California SFM 12-7A-1 door","url":"/requirements/cwuic-2025-sfm-12-7a-1-exterior-door/"},{"id":"cwuic-2025-sfm-12-7a-1-exterior-wall","instrumentId":"cwuic-2025","shortName":"California SFM 12-7A-1 wall","url":"/requirements/cwuic-2025-sfm-12-7a-1-exterior-wall/"},{"id":"cwuic-2025-sfm-12-7a-3-horizontal-underside","instrumentId":"cwuic-2025","shortName":"California SFM 12-7A-3 underside","url":"/requirements/cwuic-2025-sfm-12-7a-3-horizontal-underside/"}],"sources":[{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"California Building Standards Commission / ICC","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}]},"localAuthorities":[],"claims":{"exact":[{"id":"standard:astm-e108-ul-790:3","anchor":"local-us-ca-astm-e108-ul-790-3","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"CWUIC 504.2 requires a Class A roof assembly tested to ASTM E108 or UL 790. Named exceptions treat some masonry, metal, tile, and slate assemblies as Class A without that test. The live book is CWUIC, not Chapter 7A.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e108-ul-790","title":"ASTM E108 and UL 790 roof classification","url":"/standards/astm-e108-ul-790/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:e119-vs-wui-wall:5","anchor":"local-us-ca-e119-vs-wui-wall-5","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.5 keeps separate one-hour exterior-side, noncombustible, SFM 12-7A-1, ASTM E2707, Type X, and other exterior-wall paths. A product tested to SFM 12-7A-1 is evidence for that alternative; it does not become an ASTM E119 one-hour wall, and an OSFM listing is not itself the statutory requirement.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"e119-vs-wui-wall","title":"ASTM E119 versus a WUI wall test","url":"/guides/e119-vs-wui-wall/"},"source":{"title":"2025 California Wildland-Urban Interface Code construction notes, Section 504.5","url":"https://mccmeetingspublic.blob.core.usgovcloudapi.net/truckeeca-meet-b4e3431e34524152945f1977841011c4/ITEM-Attachment-001-59998400eff64dacbed9b4337d86e20a.pdf","publisher":"Town of Truckee public record","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"standard:astm-e136:2","anchor":"local-us-ca-astm-e136-2","place":"California OSFM handbook","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Category 8175 is Noncombustible Materials with test protocol ASTM E136. Some 8140 siding rows also name E136. Listing is voluntary for most WUI products.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e136","title":"ASTM E136","url":"/standards/astm-e136/"},"source":{"title":"OSFM Building Materials Listing and WUI handbook","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"standard:astm-e2632:4","anchor":"local-us-ca-astm-e2632-4","place":"California OSFM 8110","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Handbook category 8110 is decking tested to SFM 12-7A-4 or 12-7A-4A. Those methods are not ASTM E2632.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e2632","title":"ASTM E2632","url":"/standards/astm-e2632/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"standard:astm-e2707:3","anchor":"local-us-ca-astm-e2707-3","place":"California CWUIC (people still search Chapter 7A)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"CWUIC is the live California WUI book as of 1 January 2026. Chapter 7A is the old search name. Confirm the current wall-covering section. Do not import an Oregon E2707 path into a California job without reading the adopted book.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e2707","title":"ASTM E2707","url":"/standards/astm-e2707/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:astm-e2707:2","anchor":"local-us-ca-astm-e2707-2","place":"California OSFM 8140","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Handbook category 8140 is exterior wall siding and sheathing. Those rows name SFM 12-7A-1, not ASTM E2707. OSFM listing is voluntary for most WUI products. Absence from the handbook is not an automatic ban.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e2707","title":"ASTM E2707","url":"/standards/astm-e2707/"},"source":{"title":"OSFM Building Materials Listing","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:astm-e2768:3","anchor":"local-us-ca-astm-e2768-3","place":"California CBC Chapter 7A ignition-resistant materials","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cbc-chapter-7a","claim":"2022 CBC Section 704A.3 states ignition-resistant materials shall comply with the listed conditions of acceptance or with the conditions of acceptance of ASTM E2768.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e2768","title":"ASTM E2768","url":"/standards/astm-e2768/"},"source":{"title":"2022 California Building Code Chapter 7A (SFM)","url":"https://codes.iccsafe.org/content/CABC2022P4/chapter-7a-sfm-materials-and-construction-methods-for-exterior-wildfire-exposure","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:astm-e2886:1","anchor":"local-us-ca-astm-e2886-1","place":"OSFM category 8165","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Ember- and flame-resistant vent listings in the WUI handbook commonly name ASTM E2886. The listing ID is the program record. The test method is not a permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e2886","title":"ASTM E2886","url":"/standards/astm-e2886/"},"source":{"title":"OSFM Building Materials Listing","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:astm-e2957:3","anchor":"local-us-ca-astm-e2957-3","place":"California OSFM 8160","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Handbook category 8160 is eaves. Many rows name SFM 12-7A-3, not ASTM E2957. Listing is voluntary for most WUI products.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e2957","title":"ASTM E2957","url":"/standards/astm-e2957/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"standard:astm-e84:3","anchor":"local-us-ca-astm-e84-3","place":"OSFM WUI handbook category 8170","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Handbook lines ingested on this site for category 8170 name ASTM E84 with an extended 20-minute run. That listing note is not Oregon's 30-minute ignition-resistant definition.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"astm-e84","title":"ASTM E84","url":"/standards/astm-e84/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:bird-block-soffit-unvented:8","anchor":"local-us-ca-bird-block-soffit-unvented-8","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.3 gives enclosed and open eaves separate protection menus, including noncombustible paths; boxed-in eave soffits and projection undersides also have SFM 12-7A-3 performance paths. Section 504.10 separately governs ventilation openings through an OSFM-listed or ASTM E2886 path, while Section 504.10.2 limits its mesh alternative to off-ridge and ridge vents on a sloped roof. A soffit finish is not automatically a vent.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"bird-block-soffit-unvented","title":"Bird blocks, boxed soffit, or unvented attic","url":"/guides/bird-block-soffit-unvented/"},"source":{"title":"2025 California Wildland-Urban Interface Code construction notes, Sections 504.3, 504.7, and 504.10","url":"https://mccmeetingspublic.blob.core.usgovcloudapi.net/truckeeca-meet-b4e3431e34524152945f1977841011c4/ITEM-Attachment-001-59998400eff64dacbed9b4337d86e20a.pdf","publisher":"Town of Truckee public record","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:building-code-upgrade-coverage:1","anchor":"local-us-ca-building-code-upgrade-coverage-1","place":"California Insurance Code 10103","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"An open replacement-cost residential property policy shall not be issued or renewed unless it provides additional building code upgrade coverage of no less than 10 percent of the dwelling coverage policy limits. That coverage is additional and shall not reduce or deplete dwelling limits. The declarations page of a replacement-cost policy must state that it provides building code upgrade coverage for increased costs caused by building ordinances or laws in effect at the time of loss or rebuilding, up to policy limits for this coverage. An actual-cash-value policy that does not provide this coverage must say, in no less than 10-point type, THIS POLICY DOES NOT INCLUDE BUILDING CODE UPGRADE COVERAGE. Operative for policies issued or renewed on or after 1 July 2021.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"building-code-upgrade-coverage","title":"Building code upgrade coverage","url":"/guides/building-code-upgrade-coverage/"},"source":{"title":"Cal. Ins. Code § 10103","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=INS&sectionNum=10103","publisher":"California Legislature","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:building-code-upgrade-coverage:2","anchor":"local-us-ca-building-code-upgrade-coverage-2","place":"California Insurance Code 10103.2","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"On an offer of residential property insurance, if the insurer does not offer extended replacement cost of at least 50 percent above the dwelling limit, a disclosure must tell the applicant that policies offering that extended replacement cost may be available, and must point to CDI’s Homeowners Coverage Comparison Tool. Extended replacement cost is not building code upgrade coverage.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"building-code-upgrade-coverage","title":"Building code upgrade coverage","url":"/guides/building-code-upgrade-coverage/"},"source":{"title":"Cal. Ins. Code § 10103.2","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=INS&sectionNum=10103.2","publisher":"California Legislature","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:cal-fire-bml:1","anchor":"local-us-ca-cal-fire-bml-1","place":"OSFM WUI listing","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"The 2 September 2025 handbook states that products that are not BML listed, and not in the handbook, may still meet the prescriptive WUI rules, because listing is not a statutory mandate for most WUI products. The local building official may accept or refuse a product in that jurisdiction. OSFM can remove a product for cause.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"cal-fire-bml","title":"CAL FIRE OSFM Building Materials Listing","url":"/standards/cal-fire-bml/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"standard:cal-fire-bml:3","anchor":"local-us-ca-cal-fire-bml-3","place":"California CWUIC, effective 1 January 2026","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"The handbook’s general note still names Chapter 7A, and then states that as of 1 January 2026 Chapter 7A is replaced by CWUIC, Title 24 Part 7. Listing remains voluntary for most WUI products under that move.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"cal-fire-bml","title":"CAL FIRE OSFM Building Materials Listing","url":"/standards/cal-fire-bml/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:ab-38-disclosure:1","anchor":"local-us-ca-ab-38-disclosure-1","place":"California Civil Code § 1102.19 (defensible space at sale)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"On and after 1 July 2021, a seller of residential property subject to this article in a high or very high fire hazard severity zone shall provide the buyer documentation that the property complies with PRC 4291 or local vegetation-management ordinances. Where a local ordinance requires that documentation, the seller provides it. Where no such ordinance exists and an inspection is available from a state or local agency, government entity, or qualified nonprofit, the seller provides documentation obtained in the six months before entering the sale. If the seller has not obtained it, seller and buyer shall agree in writing that the buyer will obtain it, within one year of close of escrow where no local ordinance sets another rule. The agreement does not limit agency enforcement of defensible space.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ab-38-disclosure","title":"California AB 38 seller disclosure","url":"/guides/ab-38-disclosure/"},"source":{"title":"Cal. Civ. Code § 1102.19","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV&sectionNum=1102.19","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:ab-38-disclosure:2","anchor":"local-us-ca-ab-38-disclosure-2","place":"California Civil Code § 1102.6f (fire-hardening notice)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"On or after 1 January 2021, the seller of residential property in a high or very high fire hazard severity zone, if the home was built before 1 January 2010, shall give the buyer a statutory notice pointing to readyforwildfire.org. On or after 1 July 2025, that notice includes the low-cost retrofit list developed under Government Code 51189 and which listed retrofits, if any, the seller completed while owning the property. The seller also discloses listed vulnerable features of which the seller is aware (vents larger than 1/8 inch or not flame- and ember-resistant, untreated wood-shake roofs, combustibles within five feet and under attached decks, single-pane or nontempered glass, missing bird stops or flashing, gutters without metal or noncombustible covers). The section is not a building-code requirement.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ab-38-disclosure","title":"California AB 38 seller disclosure","url":"/guides/ab-38-disclosure/"},"source":{"title":"Cal. Civ. Code § 1102.6f","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV&sectionNum=1102.6f","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:cbc-chapter-7a:1","anchor":"local-us-ca-cbc-chapter-7a-1","place":"2025 California Building Code, effective 1 January 2026","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cbc-chapter-7a","claim":"SFM deleted Chapter 7A from the CBC and relocated the requirements to CWUIC, Title 24 Part 7. A user note points to CBC Section 101.4.8 for administrative requirements and applicability in the WUI or a Fire Hazard Severity Zone.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"cbc-chapter-7a","title":"California Building Code Chapter 7A (historical name)","url":"/standards/cbc-chapter-7a/"},"source":{"title":"2025 Title 24 California Code Changes, Chapters 5, 7, 7A and 8","url":"https://www.dgs.ca.gov/BSC/Resources/2025-Title-24-California-Code-Changes/2025-Part-2-Chapters-5--7--7A-and-8","publisher":"California Building Standards Commission","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:cbc-chapter-7a:2","anchor":"local-us-ca-cbc-chapter-7a-2","place":"2025 California Residential Code","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cbc-chapter-7a","claim":"SFM repealed all of CRC Section R337 (materials and construction methods for exterior wildfire exposure) and replaced it with a note directing the code user to CWUIC.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"cbc-chapter-7a","title":"California Building Code Chapter 7A (historical name)","url":"/standards/cbc-chapter-7a/"},"source":{"title":"2025 Title 24 California Code Changes (CRC R337)","url":"https://www.dgs.ca.gov/BSC/Resources/2025-Title-24-California-Code-Changes","publisher":"California Building Standards Commission","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:california-fair-plan:2","anchor":"local-us-ca-california-fair-plan-2","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Insurers that rate on wildfire must credit listed property and community mitigation. That is California insurance-credit regulation (10 CCR 2644.9), not a building permit and not an Oregon rule. CDI maps FAIR Plan hardening credits to the wildfire portion of premium.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"california-fair-plan","title":"California FAIR Plan","url":"/guides/california-fair-plan/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-03-01T00:00:00.000Z"}},{"id":"guide:california-fair-plan:1","anchor":"local-us-ca-california-fair-plan-1","place":"California Department of Insurance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The FAIR Plan is available to California residents and businesses who cannot obtain insurance through a regular insurance company. CDI recommends shopping the market first, then applying through a licensed broker registered to sell FAIR Plan coverage, or contacting the Plan at 800-339-4099. CDI states residential coverage limits of 3 million dollars and commercial limits of 20 million dollars per location. Residential policyholders can obtain a discount on the wildfire portion of their FAIR Plan premium for hardening. The Plan is a private association whose day-to-day operations are controlled by insurance companies, not taxpayers. A comprehensive residential policy option is described as in progress.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"california-fair-plan","title":"California FAIR Plan","url":"/guides/california-fair-plan/"},"source":{"title":"California FAIR Plan","url":"https://www.insurance.ca.gov/01-consumers/200-wrr/California-FAIR-Plan.cfm","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:safer-from-wildfires:1","anchor":"local-us-ca-safer-from-wildfires-1","place":"California Department of Insurance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"safer-from-wildfires","claim":"Safer from Wildfires is the consumer-facing map of 10 CCR 2644.9 credits. Structure and surroundings measures include Class A roof, enclosed eaves, ember-resistant vents, multipane windows, a 5-foot zone including fencing, and community designations such as Firewise USA.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"safer-from-wildfires","title":"California Safer from Wildfires","url":"/standards/safer-from-wildfires/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-03-01T00:00:00.000Z"}},{"id":"standard:cwuic:1","anchor":"local-us-ca-cwuic-1","place":"California Title 24, effective 1 January 2026","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"Chapter 7A was deleted from the California Building Code and relocated to CWUIC, Title 24 Part 7. CRC Section R337 was repealed and replaced with a note pointing to CWUIC. Material rules from 7A and R337 live in CWUIC Chapter 5.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"cwuic","title":"California Wildland-Urban Interface Code","url":"/standards/cwuic/"},"source":{"title":"2025 Title 24 California Code Changes (Part 7 and CBC Chapter 7A)","url":"https://www.dgs.ca.gov/BSC/Resources/2025-Title-24-California-Code-Changes","publisher":"California Building Standards Commission","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:cwuic:4","anchor":"local-us-ca-cwuic-4","place":"OSFM WUI listing","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"The 2 September 2025 handbook states listing is not a statutory mandate for most WUI products. Unlisted materials can still meet a prescriptive path. Presence in the handbook is not a permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"cwuic","title":"California Wildland-Urban Interface Code","url":"/standards/cwuic/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:chimney-spark-arrestors:1","anchor":"local-us-ca-chimney-spark-arrestors-1","place":"CAL FIRE low-cost retrofit list","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Cover chimney and stovepipe outlets with a noncombustible corrosion-resistant metal mesh screen (spark arrestor), with 3/8-inch to 1/2-inch openings. The list is a best-practices guide. Some items apply when a feature is up for replacement.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"chimney-spark-arrestors","title":"Chimney spark arrestors","url":"/guides/chimney-spark-arrestors/"},"source":{"title":"Low-Cost Retrofit List","url":"https://34c031f8-c9fd-4018-8c5a-4159cdff6b0d-cdn-endpoint.azureedge.net/-/media/calfire-website/misc-doc/low-cost-retrofit-list---updated-1_1_2026.pdf?rev=4a65a67e89c94d60bffb064ce282f560&hash=FC3FE889316E945D7B614FA4C7220357","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2026-01-01T00:00:00.000Z","notes":"AB 38 low-cost retrofit list, updated 1 January 2026. Same file cited on the hardening ladder."}},{"id":"guide:class-a-covering-not-a-bag:3","anchor":"local-us-ca-class-a-covering-not-a-bag-3","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.2 requires a Class A roof assembly tested to ASTM E108 or UL 790. Named exceptions treat some masonry, metal, tile, and slate assemblies as Class A without that test. That is stricter than Oregon R327’s Class B floor. The live book is CWUIC, not Chapter 7A.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"class-a-covering-not-a-bag","title":"Class A covering is not a bag of shingles","url":"/guides/class-a-covering-not-a-bag/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:class-a-covering-not-a-bag:7","anchor":"local-us-ca-class-a-covering-not-a-bag-7","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The insurance-credit rule names a Class A covering among structure measures. That is California insurance language, not Oregon law and not a bag-level class.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"class-a-covering-not-a-bag","title":"Class A covering is not a bag of shingles","url":"/guides/class-a-covering-not-a-bag/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-03-01T00:00:00.000Z"}},{"id":"guide:cwrc-vs-r327-vs-cwuic:3","anchor":"local-us-ca-cwrc-vs-r327-vs-cwuic-3","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.8 wants multilayered glazed panels with at least one pane of tempered glass, or glass block, a 20-minute fire-protection rating, or glazing meeting SFM Standard 12-7A-2. Dual-pane without a tempered pane is not that usual path. CWUIC 504.2 is typically Class A. Confirm the mapped area and the building official.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"cwrc-vs-r327-vs-cwuic","title":"Colorado CWRC versus Oregon R327 versus California CWUIC","url":"/guides/cwrc-vs-r327-vs-cwuic/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:covering-vs-assembly:4","anchor":"local-us-ca-covering-vs-assembly-4","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.2 requires a Class A roof assembly tested to ASTM E108 or UL 790. Named exceptions treat some masonry, metal, tile, and slate assemblies as Class A without that test. That is stricter than Oregon R327’s Class B floor.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"covering-vs-assembly","title":"Covering versus assembly","url":"/guides/covering-vs-assembly/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:crown-and-shrub-spacing:2","anchor":"local-us-ca-crown-and-shrub-spacing-2","place":"CAL FIRE defensible space","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"CAL FIRE’s defensible-space page tells homeowners to create horizontal spacing between shrubs and trees, with shrub spacing as a multiple of height by slope, and vertical spacing of at least three times shrub height between shrubs and the lowest tree branches, with an example of a 5-foot shrub needing 15 feet of clearance.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"crown-and-shrub-spacing","title":"Crown and shrub spacing","url":"/guides/crown-and-shrub-spacing/"},"source":{"title":"Defensible Space","url":"https://www.fire.ca.gov/dspace","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:deck-ledger-and-wall:8","anchor":"local-us-ca-deck-ledger-and-wall-8","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is a different book. Do not paste Oregon’s 30-inch to 12-foot walking-surface band, or the R327.3.4.4 underfloor menu, onto a California drawing without reading CWUIC Chapter 5. CAL FIRE’s home-hardening page treats the area under the deck footprint and five feet out as an ember-resistant zone.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"deck-ledger-and-wall","title":"Deck ledger and the wall intersection","url":"/guides/deck-ledger-and-wall/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:dryer-vents-vs-mesh:3","anchor":"local-us-ca-dryer-vents-vs-mesh-3","place":"CAL FIRE home-hardening guidance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Cover attic and underfloor vents with 1/16–1/8 inch metal mesh or replace them with State Fire Marshal listed flame- and ember-resistant vents. That page does not turn the dryer outlet into that product.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"dryer-vents-vs-mesh","title":"Dryer vents versus mesh","url":"/guides/dryer-vents-vs-mesh/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:dual-pane-vs-tempered:10","anchor":"local-us-ca-dual-pane-vs-tempered-10","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Credits multipane windows as a California insurance measure. It is not Oregon insurance law and is not a substitute for CWUIC 504.8.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"dual-pane-vs-tempered","title":"Dual-pane versus tempered windows","url":"/guides/dual-pane-vs-tempered/"},"source":{"title":"California Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:dual-pane-vs-tempered:6","anchor":"local-us-ca-dual-pane-vs-tempered-6","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.8 requires multilayered glazed panels with at least one pane of tempered glass, or glass block, a 20-minute fire-protection rating, or glazing meeting SFM Standard 12-7A-2. Dual-pane without a tempered pane is not that path.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"dual-pane-vs-tempered","title":"Dual-pane versus tempered windows","url":"/guides/dual-pane-vs-tempered/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:dual-pane-vs-tempered:9","anchor":"local-us-ca-dual-pane-vs-tempered-9","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Upgrade older single-pane units to dual-pane tempered glass. Tempered glass is about four times more resistant to breaking during a wildfire. Keep vegetation off the glass. Vinyl frames without a reinforcement bar in the separator member can deform under radiant heat. Metal mesh screens can help. That is guidance, not a listing.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"dual-pane-vs-tempered","title":"Dual-pane versus tempered windows","url":"/guides/dual-pane-vs-tempered/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:eaves:5","anchor":"local-us-ca-eaves-5","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"safer-from-wildfires","claim":"Enclosed eaves are a structure measure on the California insurance-credit list. That is not Oregon R327 and not IBHS Essential.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"eaves","title":"Eaves and soffits","url":"/build/eaves/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:eaves:3","anchor":"local-us-ca-eaves-3","place":"California OSFM handbook / SFM 12-7A-3","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Handbook category 8160 is horizontal projection underside. Many rows name SFM 12-7A-3. Some rows are listed as noncombustible under-eave material. Listing is not a statutory mandate for most WUI products.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"eaves","title":"Eaves and soffits","url":"/build/eaves/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:ember-flame-radiant:3","anchor":"local-us-ca-ember-flame-radiant-3","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is construction code in mapped fire hazard areas as of 1 January 2026. Chapter 7A is the old search name. Vents, walls, eaves, and glazing there are construction rules, not an IBHS designation and not Safer from Wildfires.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ember-flame-radiant","title":"Ember versus flame versus radiant heat","url":"/guides/ember-flame-radiant/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:vents:3","anchor":"local-us-ca-vents-3","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Cover attic and underfloor vents with 1/16–1/8 inch noncombustible metal mesh, or replace them with State Fire Marshal listed flame- and ember-resistant vents.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"vents","title":"Ember-resistant vents","url":"/build/vents/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:doors:2","anchor":"local-us-ca-doors-2","place":"California OSFM WUI handbook","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Category 8150 is Exterior Door for Wildland-Urban Interface. Eighteen listings from the 2025 handbook are on this site. Confirm the live GOVmotus record and the exact model.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"doors","title":"Exterior doors in the WUI","url":"/build/doors/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"category:siding:6","anchor":"local-us-ca-siding-6","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Combustible siding, once ignited, can carry flame to windows, eaves, and vents. Gaps, holes, and rot larger than 1/8 inch are ember paths. When full replacement is not possible, the homeowner page describes a retrofit of noncombustible siding on the bottom 2 feet plus metal flashing. That is guidance, not Oregon R327.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"siding","title":"Exterior wall siding","url":"/build/siding/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:siding:2","anchor":"local-us-ca-siding-2","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"CWUIC is the live California WUI construction code as of 1 January 2026. Material rules live in Chapter 5. Section 504.5 addresses exterior walls. OSFM category 8140 lists exterior wall siding and sheathing and names SFM 12-7A-1 as that category's protocol. Listing is voluntary for most WUI products. That is not Oregon R327's ASTM E2707 performance path.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"siding","title":"Exterior wall siding","url":"/build/siding/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:siding:7","anchor":"local-us-ca-siding-7","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"safer-from-wildfires","claim":"The insurance-credit list includes six vertical inches of noncombustible wall base above grade or a deck. That is not a wall covering class and not Oregon R327.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"siding","title":"Exterior wall siding","url":"/build/siding/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:fence-as-wick:5","anchor":"local-us-ca-fence-as-wick-5","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Insurers that rate on wildfire must credit listed mitigation, including noncombustible materials for fences and gates within 5 feet of the structure. This is a California insurance-credit rule, not Oregon law and not a building permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"fence-as-wick","title":"Fence as a wick","url":"/guides/fence-as-wick/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:fence-as-wick:4","anchor":"local-us-ca-fence-as-wick-4","place":"CAL FIRE home-hardening guidance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Replace attached combustible fencing or gates with a noncombustible option for the first 8 feet. Parallel combustible fences on a property should be at least 10 feet away. Neighboring double fences should be at least 20 feet from the residence, or replaced with an ignition-resistant or noncombustible option.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"fence-as-wick","title":"Fence as a wick","url":"/guides/fence-as-wick/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:fencing:2","anchor":"local-us-ca-fencing-2","place":"California public guidance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"CAL FIRE tells homeowners to replace combustible fencing or gates attached to the structure with a noncombustible alternative for the first eight feet from the building.","asOf":"2026-08-24T00:00:00.000Z","object":{"kind":"category","id":"fencing","title":"Fence-to-house transitions and gates","url":"/build/fencing/"},"source":{"title":"Hardening Your Home","url":"https://www.readyforwildfire.org/prepare-for-wildfire/hardening-your-home","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z"}},{"id":"guide:firewise-and-premiums:1","anchor":"local-us-ca-firewise-and-premiums-1","place":"California 10 CCR 2644.9","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"A wildfire-rating insurer’s rating plan shall reflect, and the rate offered shall be based in part on, the reduced wildfire risk associated with each community-level mitigation designation that applies, including a Firewise USA Site in Good Standing recognized by the National Fire Protection Association at the time the building is rated, and a Fire Risk Reduction Community listed by the Board of Forestry. That is a mandatory community-level factor. It is not a stated percent.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"firewise-and-premiums","title":"Firewise and premiums","url":"/guides/firewise-and-premiums/"},"source":{"title":"Cal. Code Regs. tit. 10, § 2644.9","url":"https://www.law.cornell.edu/regulations/california/10-CCR-2644.9","publisher":"California (Cornell LII reprint)","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","notes":"Regulation text opened on LII. Filed 14 October 2022."}},{"id":"guide:firewise-and-premiums:2","anchor":"local-us-ca-firewise-and-premiums-2","place":"California Safer from Wildfires brochure","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Safer from Wildfires is structure, surroundings, and community. The more steps you take, the greater your insurance savings. Item 10 names two community-wide programs, Firewise USA and Fire Risk Reduction Communities. Firewise USA is a nationally recognized program. This brochure does not print a percent.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"firewise-and-premiums","title":"Firewise and premiums","url":"/guides/firewise-and-premiums/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-03-01T00:00:00.000Z"}},{"id":"guide:firewise-usa-site:4","anchor":"local-us-ca-firewise-usa-site-4","place":"California 10 CCR 2644.9","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"A wildfire-rating insurer’s rating plan must reflect a Firewise USA site in good standing as a community-level factor. That is insurance rating, not the recognition steps on this page, and not a printed percent. Oregon does not have that regulation.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"firewise-usa-site","title":"Firewise USA site recognition","url":"/guides/firewise-usa-site/"},"source":{"title":"Cal. Code Regs. tit. 10, § 2644.9","url":"https://www.law.cornell.edu/regulations/california/10-CCR-2644.9","publisher":"California (Cornell LII reprint)","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:garage-doors-ember-path:1","anchor":"local-us-ca-garage-doors-ember-path-1","place":"CAL FIRE home-hardening guidance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Add gasketing (weatherstrip) to garage doors. Treat gaps and penetrations larger than 1/8 inch as ember paths into the home or garage. Add metal flashing at garage-door jambs and headers. Move fuel away from the inside face of the door.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"garage-doors-ember-path","title":"Garage doors as an ember path","url":"/guides/garage-doors-ember-path/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:driveway-gates:5","anchor":"local-us-ca-driveway-gates-5","place":"California State Minimum Fire Safe Regulations","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Gate entrances shall be at least two feet wider than the traffic lane serving that gate, with a minimum 14-foot unobstructed horizontal clearance and 13 feet 6 inches vertical. Gates from a road to a driveway shall be at least 30 feet from the roadway and shall open so a vehicle can stop without obstructing that road. Security gates shall not be installed without approval and shall have an approved means of emergency operation. This is Title 14, not the Oregon Fire Code.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"driveway-gates","title":"Gates across fire apparatus access","url":"/guides/driveway-gates/"},"source":{"title":"Cal. Code Regs. tit. 14, § 1273.09 Gate Entrances","url":"https://www.law.cornell.edu/regulations/california/14-CCR-1273.09","publisher":"California Board of Forestry and Fire Protection","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:gravel-under-the-deck:4","anchor":"local-us-ca-gravel-under-the-deck-4","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Keep an ember-resistant zone under the deck footprint and five feet out. Use hardscape.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"gravel-under-the-deck","title":"Gravel and pavers under the deck","url":"/guides/gravel-under-the-deck/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:gutters-and-debris:11","anchor":"local-us-ca-gutters-and-debris-11","place":"CAL FIRE home hardening (existing houses)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Clean gutters regularly. At a minimum, install a noncombustible gutter cover. When you replace the trough, use a noncombustible option such as metal. Install a metal drip edge that covers the space above the gutter.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"gutters-and-debris","title":"Gutters and debris as an ember bed","url":"/guides/gutters-and-debris/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:gutters-and-debris:9","anchor":"local-us-ca-gutters-and-debris-9","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.4 requires noncombustible gutters and downspouts and an approved means to prevent accumulation of leaves and debris. That is construction code in mapped fire hazard areas, not an IBHS designation.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"gutters-and-debris","title":"Gutters and debris as an ember bed","url":"/guides/gutters-and-debris/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:gutters-and-debris:13","anchor":"local-us-ca-gutters-and-debris-13","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The ten property measures do not list gutters as a separate insurance credit. IBHS does. Do not paste one checklist onto the other.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"gutters-and-debris","title":"Gutters and debris as an ember bed","url":"/guides/gutters-and-debris/"},"source":{"title":"California Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:gutters:4","anchor":"local-us-ca-gutters-4","place":"CAL FIRE home hardening (existing houses)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Clean gutters regularly. At a minimum, install a noncombustible gutter cover. When you replace the trough, use a noncombustible option such as metal. Install a metal drip edge that covers the space above the gutter.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"gutters","title":"Gutters and ember debris","url":"/build/gutters/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:gutters:2","anchor":"local-us-ca-gutters-2","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"CWUIC 504.4 requires gutters and downspouts of noncombustible material, and an approved means to prevent accumulation of leaves and debris. That is construction code in mapped areas as of 1 January 2026. It is not an IBHS designation and not an OSFM listing.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"gutters","title":"Gutters and ember debris","url":"/build/gutters/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:hardening-ladder:1","anchor":"local-us-ca-hardening-ladder-1","place":"CAL FIRE low-cost retrofit list (updated 1 January 2026)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The State Fire Marshal list of low-cost retrofits includes Class A roof when replacing, bird stops, noncombustible gutter covers, spark arrestors, ember- and flame-resistant vents, caulking gaps greater than 1/8 inch, siding repair, garage-door weather-stripping, multi-pane tempered windows when replacing, and OSFM WUI products when replacing siding or decks.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"hardening-ladder","title":"Home-hardening ladder","url":"/guides/hardening-ladder/"},"source":{"title":"Low-Cost Retrofit List (updated 1 January 2026)","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE / California OSFM","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","notes":"AB 38 low-cost retrofit list. Item wording follows the 1 January 2026 list and the Home Hardening page."}},{"id":"guide:how-to-read-a-fhsz-map:2","anchor":"local-us-ca-how-to-read-a-fhsz-map-2","place":"CAL FIRE FHSZ FAQ (18 December 2024)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Address lookup is at osfm.fire.ca.gov/FHSZ. Zones designate where defensible-space standards and WUI building codes are required, and they can factor in real estate disclosure. All SRA is in an FHSZ. The FAQ still names CBC Chapter 7A. WUI codes apply throughout all SRA regardless of ranking. In LRA they apply to new buildings in High and Very High FHSZs. SB 63 added Moderate and High classes in LRA. FHSZs are not a structure-loss model.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-fhsz-map","title":"How to read a CAL FIRE FHSZ map","url":"/guides/how-to-read-a-fhsz-map/"},"source":{"title":"Frequently Asked Questions About 2024 Fire Hazard Severity Zones","url":"https://34c031f8-c9fd-4018-8c5a-4159cdff6b0d-cdn-endpoint.azureedge.net/-/media/osfm-website/what-we-do/community-wildfire-preparedness-and-mitigation/fire-hazard-severity-zones/2024-fhsz-faqs_english.pdf","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2024-12-18T00:00:00.000Z"}},{"id":"guide:how-to-read-a-fhsz-map:3","anchor":"local-us-ca-how-to-read-a-fhsz-map-3","place":"California Department of Insurance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"CAL FIRE hazard maps do not affect insurance rates or availability. Insurers use wildfire risk models, not the FHSZ maps, for write, renew, and premium decisions. The maps are for local planning, not insurance decisions.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-fhsz-map","title":"How to read a CAL FIRE FHSZ map","url":"/guides/how-to-read-a-fhsz-map/"},"source":{"title":"CAL FIRE hazard maps do not affect insurance rates or availability","url":"https://34c031f8-c9fd-4018-8c5a-4159cdff6b0d-cdn-endpoint.azureedge.net/-/media/osfm-website/what-we-do/community-wildfire-preparedness-and-mitigation/040425---cal-fire-hazard-maps-do-not-affect-insurance-rates-or-availability.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-04-04T00:00:00.000Z"}},{"id":"guide:how-to-read-a-fhsz-map:5","anchor":"local-us-ca-how-to-read-a-fhsz-map-5","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"The live California WUI construction book as of 1 January 2026 is CWUIC. The December 2024 FHSZ FAQ still says Chapter 7A. People still search Chapter 7A. Read CWUIC for the lot, not the FAQ’s old book name.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-fhsz-map","title":"How to read a CAL FIRE FHSZ map","url":"/guides/how-to-read-a-fhsz-map/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:how-to-read-a-fhsz-map:1","anchor":"local-us-ca-how-to-read-a-fhsz-map-1","place":"California OSFM FHSZ program","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"The State Fire Marshal classifies State Responsibility Area lands as Moderate, High, or Very High Fire Hazard Severity Zones. The maps evaluate hazard, not risk. Hazard is physical conditions over 30 to 50 years without mitigation. SRA maps became effective 1 April 2024. 2025 LRA recommended maps were released in four phases from 10 February through 24 March 2025. Contact the local jurisdiction for LRA.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-fhsz-map","title":"How to read a CAL FIRE FHSZ map","url":"/guides/how-to-read-a-fhsz-map/"},"source":{"title":"Fire Hazard Severity Zones","url":"https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/fire-hazard-severity-zones","publisher":"CAL FIRE Office of the State Fire Marshal","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","notes":"Live OSFM host returned HTTP 403 this session. Text verified from the 9 August 2026 Internet Archive capture of this URL."}},{"id":"guide:how-to-read-a-class-a-roof-listing:1","anchor":"local-us-ca-how-to-read-a-class-a-roof-listing-1","place":"OSFM 8180 handbook rows (2 September 2025)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Category 8180 is non-wood roof covering and assemblies for the WUI. Listing 8180-2299:0500 is Metal Sales Image II on 5:12, 15/32 inch AC plywood, named felt and VersaShield underlayments, an existing Class A shingle layer, and the new metal covering, tested to ASTM E108 as a Class A roof covering. Listing 8180-2299:0501 is the same covering family on a different deck and underlayment. Listing 8180-2372:0001 is an underlayment used in named Class A systems, not a finished roof by itself.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-class-a-roof-listing","title":"How to read a Class A roof listing","url":"/guides/how-to-read-a-class-a-roof-listing/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:how-to-read-a-class-a-roof-listing:5","anchor":"local-us-ca-how-to-read-a-class-a-roof-listing-5","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.2 requires a Class A roof assembly tested to ASTM E108 or UL 790, with named exceptions. That is stricter than Oregon’s Class B floor. An 8180 row is still not a permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-class-a-roof-listing","title":"How to read a Class A roof listing","url":"/guides/how-to-read-a-class-a-roof-listing/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:how-to-read-a-listing:3","anchor":"local-us-ca-how-to-read-a-listing-3","place":"California mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is the live California WUI construction book in mapped areas. It is not Oregon R327 and not an IBHS checklist.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-listing","title":"How to read a listing","url":"/guides/how-to-read-a-listing/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:ibhs-does-not-replace-code:3","anchor":"local-us-ca-ibhs-does-not-replace-code-3","place":"California mapped WUI","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is adopted construction code in mapped fire hazard areas. IBHS remains a designation. Passing one does not prove the other.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ibhs-does-not-replace-code","title":"IBHS does not replace adopted code","url":"/guides/ibhs-does-not-replace-code/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:ibhs-does-not-replace-code:4","anchor":"local-us-ca-ibhs-does-not-replace-code-4","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Safer from Wildfires is a California Department of Insurance credit list. It is not Oregon law, not IBHS, and not a building permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ibhs-does-not-replace-code","title":"IBHS does not replace adopted code","url":"/guides/ibhs-does-not-replace-code/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-03-01T00:00:00.000Z"}},{"id":"guide:ignition-resistant-vs-noncombustible:5","anchor":"local-us-ca-ignition-resistant-vs-noncombustible-5","place":"California OSFM handbook","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Category 8170 is Ignition-Resistant Materials. Ingested handbook notes on this site often name ASTM E84 with an extended 20-minute run. That note is not Oregon’s 30-minute definition. Category 8175 is Noncombustible Materials with protocol ASTM E136.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ignition-resistant-vs-noncombustible","title":"Ignition-resistant versus noncombustible","url":"/guides/ignition-resistant-vs-noncombustible/"},"source":{"title":"OSFM Building Materials Listing and WUI handbook","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"standard:iwuic:2","anchor":"local-us-ca-iwuic-2","place":"California CWUIC, effective 1 January 2026","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"CWUIC is Title 24 Part 7, based on the 2024 IWUIC and amended. CBC Chapter 7A and CRC R337 were relocated into CWUIC Chapter 5. IWUIC Sections 505 and 506 are reserved in CWUIC. Do not spec unmodified IWUIC on a California mapped lot.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"iwuic","title":"International Wildland-Urban Interface Code","url":"/standards/iwuic/"},"source":{"title":"2025 Title 24 California Code Changes (Part 7)","url":"https://www.dgs.ca.gov/BSC/Resources/2025-Title-24-California-Code-Changes","publisher":"California Building Standards Commission","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:ladder-fuels:2","anchor":"local-us-ca-ladder-fuels-2","place":"CAL FIRE defensible space","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Maintain space between the lowest tree branches and the ground or shrubs. Remove tree branches at least six feet from the ground. Keep at least three times the height of any shrubs between the shrubs and the lowest branches of trees. Example, a 5-foot shrub needs 15 feet of clearance to the lowest tree branch.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ladder-fuels","title":"Ladder fuels","url":"/guides/ladder-fuels/"},"source":{"title":"Defensible Space","url":"https://www.fire.ca.gov/dspace","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:listings-expire:1","anchor":"local-us-ca-listings-expire-1","place":"OSFM Building Materials Listing (live pull 2026-08-23)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The DURA Siding&Trim record stores listing 8160-2126:0501 as expired, present in the 2 September 2025 WUI handbook and not in the live BML as of 2026-08-23. The American Wood Council 8140-2041:0004 record stores status listed and expires 2027-06-30 from that same live BML pull.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"listings-expire","title":"Listings expire. The lapse log is where we catch it","url":"/guides/listings-expire/"},"source":{"title":"OSFM Building Materials Listing search","url":"https://calfire.govmotus.org/BMLSearch/Index","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:mesh-vs-listed-vents:1","anchor":"local-us-ca-mesh-vs-listed-vents-1","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Cover attic and underfloor vents with 1/16–1/8 inch metal mesh, or replace them with State Fire Marshal listed flame- and ember-resistant vents. Those are two paths, not two names for one product.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"mesh-vs-listed-vents","title":"Mesh versus listed vents","url":"/guides/mesh-vs-listed-vents/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:mitigation-documentation:1","anchor":"local-us-ca-mitigation-documentation-1","place":"California Department of Insurance (consumer FAQ)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"After you complete a wildfire mitigation action, contact the company or agent and advise of the completed work. You may need to provide proof, or an inspection may be required. The company should tell you the premium savings. Savings are reflected at the start of the next policy period.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"mitigation-documentation","title":"Mitigation documentation for insurers","url":"/guides/mitigation-documentation/"},"source":{"title":"What does being Safer from Wildfires mean for my Insurance?","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/FAQ-Safer-from-Wildfire-Regulation.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2023-04-01T00:00:00.000Z"}},{"id":"guide:mitigation-documentation:3","anchor":"local-us-ca-mitigation-documentation-3","place":"California 10 CCR 2644.9","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"If you completed a mitigation measure since the last application or renewal, the insurer that uses a wildfire risk score or classification must provide a revised score no later than 30 days after you request it. The score must explain which features drove it, which measures would lower it, and the premium reduction for each measure under the rating plan then in effect. You may appeal the assignment to the insurer.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"mitigation-documentation","title":"Mitigation documentation for insurers","url":"/guides/mitigation-documentation/"},"source":{"title":"Cal. Code Regs. tit. 10, § 2644.9","url":"https://www.law.cornell.edu/regulations/california/10-CCR-2644.9","publisher":"California (Cornell LII reprint)","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","notes":"Regulation text opened on LII. Filed 14 October 2022."}},{"id":"guide:mitigation-documentation:2","anchor":"local-us-ca-mitigation-documentation-2","place":"California Department of Insurance (insurer FAQ)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Verification that a mitigation action was completed or remains current follows the underwriting process the company filed. The company may file a specific verification process, or it may accept the policyholder’s or applicant’s responses on the questionnaire or application if it does not wish to inspect. Frequency of verification is at the company’s discretion.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"mitigation-documentation","title":"Mitigation documentation for insurers","url":"/guides/mitigation-documentation/"},"source":{"title":"FAQ: Mitigation in Rating Plans and Wildfire Risk Models Regulation","url":"https://www.insurance.ca.gov/0250-insurers/0800-rate-filings/0200-prior-approval-factors/upload/FAQ-Mitigation-in-Rating-Plans-and-Wildfire-Risk-Models-Regulation_2023-02-16.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2023-02-16T00:00:00.000Z"}},{"id":"guide:one-road-out:1","anchor":"local-us-ca-one-road-out-1","place":"California State Minimum Fire Safe Regulations","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Roads and driveways shall provide safe access for emergency wildfire equipment and civilian evacuation concurrently, and unobstructed traffic circulation during a wildfire emergency (14 CCR § 1273.00). Roads shall provide two 10-foot traffic lanes for two-way flow unless another standard in the article or a local rule applies. Driveways shall provide one 10-foot traffic lane, 14 feet unobstructed horizontal clearance, and 13 feet 6 inches vertical (14 CCR § 1273.01). Dead-end road maximum length, including all dead-end roads accessed from that road, is 800 feet on parcels zoned under one acre, 1,320 feet on 1 to 4.99 acres, 2,640 feet on 5 to 19.99 acres, and 5,280 feet on 20 acres or larger (14 CCR § 1273.08).","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"one-road-out","title":"One road out","url":"/guides/one-road-out/"},"source":{"title":"Cal. Code Regs. tit. 14, §§ 1273.00, 1273.01, 1273.08","url":"https://www.law.cornell.edu/regulations/california/14-CCR-1273.00","publisher":"California Board of Forestry and Fire Protection","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","notes":"1273.01 https://www.law.cornell.edu/regulations/california/14-CCR-1273.01 and 1273.08 https://www.law.cornell.edu/regulations/california/14-CCR-1273.08 opened the same day."}},{"id":"guide:oregon-defensible-space-checklist:2","anchor":"local-us-ca-oregon-defensible-space-checklist-2","place":"CAL FIRE","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Ladder-fuel spacing uses at least three times the shrub height between the shrub and the lowest branches. That is not OSFM’s 6-foot or one-third-height limb picture.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"oregon-defensible-space-checklist","title":"Oregon defensible-space checklist","url":"/guides/oregon-defensible-space-checklist/"},"source":{"title":"Defensible Space","url":"https://www.fire.ca.gov/dspace","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:oregon-fair-plan:3","anchor":"local-us-ca-oregon-fair-plan-3","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"California’s residual-market and mitigation-credit rules are not Oregon DFR. Do not import those percentages onto an Oregon FAIR Plan policy.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"oregon-fair-plan","title":"Oregon has a FAIR Plan","url":"/guides/oregon-fair-plan/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:r327-vs-cwuic:2","anchor":"local-us-ca-r327-vs-cwuic-2","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.8 wants multilayered glazed panels with at least one pane of tempered glass, or glass block, a 20-minute fire-protection rating, or glazing meeting SFM Standard 12-7A-2. Dual-pane without a tempered pane is not that usual path.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"r327-vs-cwuic","title":"Oregon R327 versus California CWUIC","url":"/guides/r327-vs-cwuic/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:oregon-wildfire-disclosure:3","anchor":"local-us-ca-oregon-wildfire-disclosure-3","place":"California Civil Code §§ 1102.19 and 1102.6f","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"California requires defensible-space documentation at sale in high or very high FHSZ, and a fire-hardening notice for pre-2010 homes. Oregon ORS 105.464 is a different form. Do not paste AB 38 onto an Oregon listing.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"oregon-wildfire-disclosure","title":"Oregon wildfire disclosure","url":"/guides/oregon-wildfire-disclosure/"},"source":{"title":"Cal. Civ. Code § 1102.19","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV&sectionNum=1102.19","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:osfm-8165-vent-applications:1","anchor":"local-us-ca-osfm-8165-vent-applications-1","place":"OSFM category 8165","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Handbook category 8165 is ember- and flame-resistant vents. Listing is not a statutory mandate for most WUI products. The listing ID is a model in an orientation, not a brand.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"osfm-8165-vent-applications","title":"OSFM 8165 vent applications","url":"/guides/osfm-8165-vent-applications/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:listed-is-voluntary:1","anchor":"local-us-ca-listed-is-voluntary-1","place":"OSFM WUI listing","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The 2 September 2025 handbook states that products that are not BML listed, and not in the handbook, may still meet the prescriptive WUI rules, because listing is not a statutory mandate for most WUI products. Missing from the handbook is not an automatic ban. On the handbook is not an automatic permit. The local building official may accept or refuse a product in that jurisdiction.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"listed-is-voluntary","title":"OSFM listing is usually voluntary","url":"/guides/listed-is-voluntary/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:party-walls-and-r327:3","anchor":"local-us-ca-party-walls-and-r327-3","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is a different book. California townhouse fire-separation and WUI exterior rules are not Oregon R302.2.12. Do not paste Oregon’s Class C/Class B townhouse roof split onto a California drawing.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"party-walls-and-r327","title":"Party walls, townhouse roofs, and R327","url":"/guides/party-walls-and-r327/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:plastic-skylights:4","anchor":"local-us-ca-plastic-skylights-4","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.8 includes skylights among glazed openings that must be multilayered with at least one tempered pane, glass block, a 20-minute fire-protection rating, or SFM 12-7A-2. Operable skylights also need 1/8 inch noncombustible mesh.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"plastic-skylights","title":"Plastic skylights under R327 and CWUIC","url":"/guides/plastic-skylights/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:premiums-with-no-nearby-fire:3","anchor":"local-us-ca-premiums-with-no-nearby-fire-3","place":"California 10 CCR 2644.9","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"A California wildfire-rating insurer that uses a wildfire risk score or classification must provide it in writing at application, at least 45 days before renewal, at least 75 days before nonrenewal, and within 30 days after a request following completed mitigation. That is a California rating-disclosure rule. It is not ORS 742.277.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"premiums-with-no-nearby-fire","title":"Premiums with no nearby fire","url":"/guides/premiums-with-no-nearby-fire/"},"source":{"title":"Cal. Code Regs. tit. 10, § 2644.9","url":"https://www.law.cornell.edu/regulations/california/10-CCR-2644.9","publisher":"California (Cornell LII reprint)","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:psps-and-the-house:2","anchor":"local-us-ca-psps-and-the-house-2","place":"CPUC PSPS FAQs (house systems)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"If you rely on electric or battery-dependent medical devices, plan for an extended outage. Most solar systems power down during a shutoff so they do not back-feed the grid. Generators can provide backup and pose fire and carbon monoxide hazards. Water and gas should stay on, except where water requires an electric pump, including well systems. If an electric garage door cannot be operated manually, move the vehicle out before the shutoff. Contact the utility before connecting backup to house wiring.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"psps-and-the-house","title":"Public Safety Power Shutoff and the house","url":"/guides/psps-and-the-house/"},"source":{"title":"Public Safety Power Shutoff PSPS FAQs","url":"https://www.cpuc.ca.gov/consumer-support/psps/public-safety-power-shutoff-faqs","publisher":"California Public Utilities Commission","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:psps-and-the-house:1","anchor":"local-us-ca-psps-and-the-house-1","place":"California Public Utilities Commission (PSPS)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Utilities may temporarily turn off power to specific areas to reduce the risk of fires caused by electric infrastructure. That action is a Public Safety Power Shutoff. CPUC treats it as a last-resort measure when the utility reasonably believes strong winds may topple lines or cause vegetation-related issues. PUC sections 451 and 399.2(a) are the authority CPUC cites. PSPS events can leave communities and essential facilities without power, which brings its own risks, especially for vulnerable people. IOUs named on the page include PacifiCorp.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"psps-and-the-house","title":"Public Safety Power Shutoff and the house","url":"/guides/psps-and-the-house/"},"source":{"title":"Public Safety Power Shutoffs (PSPS)","url":"https://www.cpuc.ca.gov/psps/","publisher":"California Public Utilities Commission","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:rebuild-after-wildfire:3","anchor":"local-us-ca-rebuild-after-wildfire-3","place":"California building-code upgrade coverage","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"An open replacement-cost residential policy must include additional building-code upgrade coverage of no less than 10 percent of dwelling limits. That coverage pays increased costs caused by ordinances or laws in force at repair or rebuild. It is additional and does not reduce dwelling limits. It is not a WUI detailing catalog.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"rebuild-after-wildfire","title":"Rebuild after wildfire","url":"/guides/rebuild-after-wildfire/"},"source":{"title":"Cal. Ins. Code § 10103","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=INS&sectionNum=10103","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:renters-and-defensible-space:1","anchor":"local-us-ca-renters-and-defensible-space-1","place":"California Public Resources Code § 4291 (state responsibility area)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall maintain the defensible space described in (a)(1). A person is not required under this section to manage fuels on land if that person does not have the legal right to manage fuels, nor is a person required to enter upon or to alter property that is owned by any other person without the consent of the owner of the property.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"renters-and-defensible-space","title":"Renters and defensible space","url":"/guides/renters-and-defensible-space/"},"source":{"title":"Cal. Pub. Res. Code § 4291","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PRC&sectionNum=4291","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z"}},{"id":"guide:ridge-vents-vs-e2886:4","anchor":"local-us-ca-ridge-vents-vs-e2886-4","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.10.2 names 1/16–1/8 inch noncombustible, corrosion-resistant mesh for off-ridge and ridge vents on a sloped roof. 504.10.1 names OSFM listed wildfire flame- and ember-resistant vents, or WUI vents tested to ASTM E2886.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"ridge-vents-vs-e2886","title":"Ridge vents versus ASTM E2886","url":"/guides/ridge-vents-vs-e2886/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:roof-to-wall-and-dormer-cheeks:4","anchor":"local-us-ca-roof-to-wall-and-dormer-cheeks-4","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.2 requires a Class A roof assembly tested to ASTM E108 or UL 790, with named exceptions. That is stricter than Oregon’s Class B floor. Do not paste Oregon’s Class B sentence onto a California dormer without reading Chapter 5.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"roof-to-wall-and-dormer-cheeks","title":"Roof-to-wall transitions and dormer cheeks","url":"/guides/roof-to-wall-and-dormer-cheeks/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:safer-from-wildfires-not-oregon:3","anchor":"local-us-ca-safer-from-wildfires-not-oregon-3","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is California construction code in mapped fire hazard areas as of 1 January 2026. Chapter 7A is the old search name. It is not the Safer from Wildfires insurance-credit list.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"safer-from-wildfires-not-oregon","title":"Safer from Wildfires is not Oregon law","url":"/guides/safer-from-wildfires-not-oregon/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:safer-from-wildfires-not-oregon:2","anchor":"local-us-ca-safer-from-wildfires-not-oregon-2","place":"California","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Insurers that rate on wildfire must credit the named Safer from Wildfires property and community measures. That is California insurance regulation, not a building permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"safer-from-wildfires-not-oregon","title":"Safer from Wildfires is not Oregon law","url":"/guides/safer-from-wildfires-not-oregon/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:sfm-12-7a-1:2","anchor":"local-us-ca-sfm-12-7a-1-2","place":"California OSFM WUI handbook","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Category 8140 is exterior wall siding and sheathing. The handbook names SFM 12-7A-1 as that category’s protocol. Listing is not a statutory mandate for most WUI products.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"sfm-12-7a-1","title":"SFM 12-7A-1","url":"/standards/sfm-12-7a-1/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"standard:sfm-12-7a-3:1","anchor":"local-us-ca-sfm-12-7a-3-1","place":"California OSFM handbook","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Handbook category 8160 is horizontal projection underside. Many rows name SFM 12-7A-3. Some rows are listed as noncombustible under-eave material. Listing is not a statutory mandate for most WUI products.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"sfm-12-7a-3","title":"SFM 12-7A-3","url":"/standards/sfm-12-7a-3/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"standard:sfm-12-7a-4:1","anchor":"local-us-ca-sfm-12-7a-4-1","place":"California CWUIC / OSFM 8110","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"cal-fire-bml","claim":"Handbook category 8110 is decking tested to SFM 12-7A-4 or 12-7A-4A. OSFM listing is not a statutory mandate for most WUI products. Absence from the handbook is not an automatic ban.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"sfm-12-7a-4","title":"SFM 12-7A-4 decking","url":"/standards/sfm-12-7a-4/"},"source":{"title":"OSFM Building Materials Listing","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:sfm-12-7a-5:2","anchor":"local-us-ca-sfm-12-7a-5-2","place":"2022 CBC Section 704A.3","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cbc-chapter-7a","claim":"Ignition-resistant materials shall comply with the conditions of acceptance in the section or with the conditions of acceptance of ASTM E2768.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"sfm-12-7a-5","title":"SFM 12-7A-5","url":"/standards/sfm-12-7a-5/"},"source":{"title":"2022 California Building Code Chapter 7A (SFM)","url":"https://codes.iccsafe.org/content/CABC2022P4/chapter-7a-sfm-materials-and-construction-methods-for-exterior-wildfire-exposure","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:sfm-12-7a-5:1","anchor":"local-us-ca-sfm-12-7a-5-1","place":"California Chapter 7A / SFM 12-7A-5","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"sfm-12-7a-5","claim":"SFM Standard 12-7A-5, Ignition-resistant Material, is a generic building-material surface-burning flame-spread test consisting of an extended 30-minute ASTM E84 or UL 723 method as used for fire-retardant-treated wood. Conditions of acceptance used with that definition include flame spread index not exceeding 25, no evidence of progressive combustion after the extended 30-minute period, and a flame front that does not progress more than 10.5 feet beyond the burner centerline.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"sfm-12-7a-5","title":"SFM 12-7A-5","url":"/standards/sfm-12-7a-5/"},"source":{"title":"CA Building Code for Exterior Wildfire Exposure (CBC Chapter 7A definitions)","url":"https://www.losaltoshills.ca.gov/525/CA-Building-Code-for-Exterior-Wildfire-E","publisher":"Town of Los Altos Hills (CBC Chapter 7A reprint)","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"standard:sfm-12-7a-2:2","anchor":"local-us-ca-sfm-12-7a-2-2","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"CWUIC 504.8 requires multilayered glazed panels with at least one pane of tempered glass, or glass block, a 20-minute fire-protection rating, or glazing meeting SFM Standard 12-7A-2. Dual-pane annealed energy-code glass is not the usual California path.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"standard","id":"sfm-12-7a-2","title":"SFM Standard 12-7A-2","url":"/standards/sfm-12-7a-2/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:show-product-on-drawings:2","anchor":"local-us-ca-show-product-on-drawings-2","place":"OSFM WUI listing","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Listing is not a statutory mandate for most WUI products. Missing from the handbook is not an automatic ban. On the handbook is not an automatic permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"show-product-on-drawings","title":"Show the product on the drawings","url":"/guides/show-product-on-drawings/"},"source":{"title":"OSFM Building Materials Listing","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:the-100-foot-rule-on-a-50-foot-lot:1","anchor":"local-us-ca-the-100-foot-rule-on-a-50-foot-lot-1","place":"California Public Resources Code § 4291 (state responsibility area)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line, except as provided in (a)(1)(B). Intensity of fuels management may vary within that 100-foot perimeter, with more intense fuel reductions between 5 and 30 feet around the structure, and an ember-resistant zone being required within 5 feet of the structure, based on regulations promulgated by the board. A person is not required under this section to manage fuels on land if that person does not have the legal right to manage fuels, nor is a person required to enter upon or to alter property that is owned by any other person without the consent of the owner of the property. Fuel modification on adjacent property shall only be conducted following written consent by the adjacent landowner. An insurance company may require a greater distance than (a)(1)(A) if a fire expert designated by the director provides findings that the fuel modification is necessary, and there is no other feasible mitigation measure. That greater distance may not be beyond the property line unless allowed by state law, local ordinance, rule, or regulation.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"the-100-foot-rule-on-a-50-foot-lot","title":"The 100-foot rule on a 50-foot lot","url":"/guides/the-100-foot-rule-on-a-50-foot-lot/"},"source":{"title":"Cal. Pub. Res. Code § 4291","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PRC&sectionNum=4291","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z"}},{"id":"guide:twelve-foot-rule:5","anchor":"local-us-ca-twelve-foot-rule-5","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC Chapter 5 protects enclosed eaves (504.3) and names vent rules (504.10). Those sections do not use Oregon’s 12-foot eave-vent exception as the path. Do not import this number onto a California drawing.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"twelve-foot-rule","title":"The 12-foot rule","url":"/guides/twelve-foot-rule/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:type-x-path:5","anchor":"local-us-ca-type-x-path-5","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is California construction code. Do not paste this Oregon Type X exception onto a California drawing. OSFM 8140 siding listings name SFM 12-7A-1 or other protocols. Listing is voluntary for most WUI products.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"type-x-path","title":"Type X behind the covering","url":"/guides/type-x-path/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:unvented-attic:5","anchor":"local-us-ca-unvented-attic-5","place":"California CWUIC mapped areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Do not import a “listed vents only” California drawing note onto an Oregon R327 job that still allows mesh, height, or unvented. CWUIC is California construction code. Confirm the adopted code for the lot.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"unvented-attic","title":"Unvented attic as a wildfire path","url":"/guides/unvented-attic/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:valley-flashing-r327:3","anchor":"local-us-ca-valley-flashing-r327-3","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is a different book. Do not paste Oregon’s 26-gage plus 36-inch D3909 valley sentence onto a California drawing without reading CWUIC Chapter 5 roofing.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"valley-flashing-r327","title":"Valley metal and cap sheet under R327.3","url":"/guides/valley-flashing-r327/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:wall-covering-termination:4","anchor":"local-us-ca-wall-covering-termination-4","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is a different book. Do not paste Oregon’s 2-inch blocking termination onto a California drawing without reading CWUIC Chapter 5 wall and eave sections.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"wall-covering-termination","title":"Wall covering termination under R327.3.3.1","url":"/guides/wall-covering-termination/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:wall-penetrations-small-holes:5","anchor":"local-us-ca-wall-penetrations-small-holes-5","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC is a different book. Do not paste Oregon’s attic-vent mesh sentence onto a California hose bib or lineset without reading Chapter 5. This page does not invent a CWUIC hose-bib subsection.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"wall-penetrations-small-holes","title":"Wall penetrations, hose bibs, and linesets","url":"/guides/wall-penetrations-small-holes/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:what-you-can-touch-on-a-rental-or-hoa-lot:2","anchor":"local-us-ca-what-you-can-touch-on-a-rental-or-hoa-lot-2","place":"California Public Resources Code § 4291 (state responsibility area)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall maintain the defensible space in (a)(1). A person is not required under this section to manage fuels on land if that person does not have the legal right to manage fuels, nor is a person required to enter upon or to alter property that is owned by any other person without the consent of the owner of the property.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"what-you-can-touch-on-a-rental-or-hoa-lot","title":"What you can touch on a rental or HOA lot","url":"/guides/what-you-can-touch-on-a-rental-or-hoa-lot/"},"source":{"title":"Cal. Pub. Res. Code § 4291","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PRC&sectionNum=4291","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z"}},{"id":"guide:what-you-can-touch-on-a-rental-or-hoa-lot:1","anchor":"local-us-ca-what-you-can-touch-on-a-rental-or-hoa-lot-1","place":"California Civil Code § 4205 (common-interest governing documents)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"To the extent of any conflict between the governing documents and the law, the law shall prevail. To the extent of any conflict between the articles of incorporation and the declaration, the declaration shall prevail. To the extent of any conflict between the bylaws and the articles or declaration, the articles or declaration shall prevail. To the extent of any conflict between the operating rules and the bylaws, articles, or declaration, the bylaws, articles, or declaration shall prevail.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"what-you-can-touch-on-a-rental-or-hoa-lot","title":"What you can touch on a rental or HOA lot","url":"/guides/what-you-can-touch-on-a-rental-or-hoa-lot/"},"source":{"title":"Cal. Civ. Code § 4205","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV&sectionNum=4205","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z"}},{"id":"guide:who-can-do-a-defensible-space-assessment:5","anchor":"local-us-ca-who-can-do-a-defensible-space-assessment-5","place":"California Civil Code § 1102.19 (defensible space at sale)","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Where no local ordinance requires the documentation and an inspection is available from a state or local agency, government entity, or qualified nonprofit, the seller provides documentation obtained in the six months before entering the sale. If the seller has not obtained it, seller and buyer shall agree in writing that the buyer will obtain it. That inspection is sale documentation. It is not Oregon OSFM’s education visit and not an IBHS designation.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"who-can-do-a-defensible-space-assessment","title":"Who can do a defensible-space assessment","url":"/guides/who-can-do-a-defensible-space-assessment/"},"source":{"title":"Cal. Civ. Code § 1102.19","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CIV&sectionNum=1102.19","publisher":"California Legislative Counsel","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:why-no-official-california-plant-list:2","anchor":"local-us-ca-why-no-official-california-plant-list-2","place":"California Building Code 2022 Chapter 7A","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"701A.1: this chapter applies to building materials, systems and/or assemblies used in the exterior design and construction of new buildings located within a WUI Fire Area. 701A.2 purpose: establish minimum standards so a building can resist the intrusion of flames or burning embers projected by a vegetation fire. FIRE-RESISTANT VEGETATION: plants, shrubs, trees and other vegetation that exhibit properties, such as high moisture content, little accumulation of dead vegetation, and low sap or resin content, that make them less likely to ignite or contribute heat or spread flame in a fire than native vegetation typically found in the region. Note: example sources are Fire-resistant Plants for Home Landscapes (a Pacific Northwest Extension publication); Home Landscaping for Fire, University of California Division of Agriculture and Natural Resources; Sunset Western Garden Book. 701A.5 requires vegetation-management compliance with California Fire Code Section 4906, including PRC 4291 or Government Code 51182, before permit final. This page does not treat 2022 Chapter 7A as the live 2026 book.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"why-no-official-california-plant-list","title":"Why is there no official California plant list","url":"/guides/why-no-official-california-plant-list/"},"source":{"title":"California Building Code 2022, Chapter 7A","url":"https://up.codes/viewer/california/ca-building-code-2022/chapter/7A/sfm-materials-and-construction-methods-for-exterior-wildfire-exposure","publisher":"California Building Standards Commission / UpCodes viewer","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2022-01-01T00:00:00.000Z"}},{"id":"guide:why-no-official-california-plant-list:1","anchor":"local-us-ca-why-no-official-california-plant-list-1","place":"California Public Resources Code 4291","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line except as provided. Fuels shall be maintained and spaced so a wildfire would be unlikely to ignite the structure. Intensity of fuels management may vary within the 100-foot perimeter, with more intense fuel reductions between 5 and 30 feet, and an ember-resistant zone required within 5 feet of the structure, based on board regulations. Fuel means any combustible material, including petroleum-based products, cultivated landscape plants, grasses, and weeds, and wildland vegetation. The board shall post a guidance document on fuels management with regionally appropriate vegetation management suggestions; that document was not opened this session.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"why-no-official-california-plant-list","title":"Why is there no official California plant list","url":"/guides/why-no-official-california-plant-list/"},"source":{"title":"California Public Resources Code § 4291","url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PRC&sectionNum=4291","publisher":"California Legislative Information","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2025-10-13T00:00:00.000Z"}},{"id":"guide:why-rosemary-is-disputed:2","anchor":"local-us-ca-why-rosemary-is-disputed-2","place":"Marin County, California","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"FIRESafe MARIN’s May 2024 rosemary yard tip says rosemary is not a Firewise choice in high fire-risk areas. Essential oils and resinous foliage can make it highly flammable. If you keep it, more than 5 feet from the house, well irrigated, and maintained free of dead, twiggy material.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"why-rosemary-is-disputed","title":"Why rosemary is disputed","url":"/guides/why-rosemary-is-disputed/"},"source":{"title":"The Risk of Rosemary","url":"https://firesafemarin.org/wp-content/uploads/Rosemary-Yard-Tip-.pdf","publisher":"FIRESafe MARIN","sourceType":"secondary","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2024-05-01T00:00:00.000Z"}},{"id":"category:decking:3","anchor":"local-us-ca-decking-3","place":"California CWUIC / OSFM 8110","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"Handbook category 8110 is decking tested to SFM 12-7A-4 or 12-7A-4A. OSFM listing is not a statutory mandate for most WUI products. Absence from the handbook is not an automatic ban.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"decking","title":"Wildfire decking","url":"/build/decking/"},"source":{"title":"OSFM Building Materials Listing","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:decking:4","anchor":"local-us-ca-decking-4","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Keep an ember-resistant zone under the deck footprint and five feet out. Use hardscape. Replace walking-surface boards with ignition-resistant, noncombustible, fire-retardant-treated, or performance-tested material.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"decking","title":"Wildfire decking","url":"/build/decking/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:roofing:5","anchor":"local-us-ca-roofing-5","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"CAL FIRE treats the roof as the most vulnerable part of the home. Wood shake and wood shingle roofs are the wildfire non-example. Debris in valleys and gutters is an ember bed. Cleaning is maintenance. Replacement is a permit conversation.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"roofing","title":"Wildfire roofing","url":"/build/roofing/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:roofing:2","anchor":"local-us-ca-roofing-2","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"CWUIC 504.2 requires a Class A roof assembly tested to ASTM E108 or UL 790. Named exceptions treat some masonry, metal, tile, and slate assemblies as Class A without that test. That is stricter than Oregon R327’s Class B floor.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"roofing","title":"Wildfire roofing","url":"/build/roofing/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:windows:6","anchor":"local-us-ca-windows-6","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"safer-from-wildfires","claim":"Credits multipane windows as a California insurance measure. It is not Oregon insurance law and is not a substitute for CWUIC 504.8.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"windows","title":"Wildfire windows","url":"/build/windows/"},"source":{"title":"California Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:windows:2","anchor":"local-us-ca-windows-2","place":"California CWUIC (mapped WUI)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":"cwuic","claim":"Exterior glazing must be multilayered with at least one tempered pane, glass block, 20-minute rated, or tested to SFM 12-7A-2. Energy-code dual-pane annealed glass is not that path.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"windows","title":"Wildfire windows","url":"/build/windows/"},"source":{"title":"2025 California Wildland-Urban Interface Code","url":"https://codes.iccsafe.org/content/CAWUIC2025P1","publisher":"ICC / California","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:windows:5","anchor":"local-us-ca-windows-5","place":"CAL FIRE home hardening","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Upgrade older single-pane units to dual-pane tempered glass. Tempered glass is about four times more resistant to breaking during a wildfire. Keep vegetation off the glass. Vinyl frames without a reinforcement bar in the separator member can deform under radiant heat. Metal mesh screens can help. That is guidance, not a listing.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"windows","title":"Wildfire windows","url":"/build/windows/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:wui-door-vs-fire-door:6","anchor":"local-us-ca-wui-door-vs-fire-door-6","place":"California OSFM 8150","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Category 8150 is Exterior Door for Wildland-Urban Interface. Listing is not a statutory mandate for most WUI products. Confirm the live GOVmotus record and the model.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"wui-door-vs-fire-door","title":"WUI doors versus 20-minute fire doors","url":"/guides/wui-door-vs-fire-door/"},"source":{"title":"2025 OSFM WUI Listed Products Handbook (2 September 2025)","url":"https://osfm.fire.ca.gov/what-we-do/fire-engineering-and-investigations/building-materials-listing","publisher":"CAL FIRE OSFM","sourceType":"listing-body","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-09-02T00:00:00.000Z"}},{"id":"guide:wui-door-vs-fire-door:7","anchor":"local-us-ca-wui-door-vs-fire-door-7","place":"California CWUIC mapped fire hazard areas","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"CWUIC 504.9 keeps noncombustible, thick solid-core wood, NFPA 252/UL 10 20-minute, ASTM E2707, and SFM 12-7A-1 exterior-door paths separate. A current OSFM 8150 listing can document a tested product path, but the code does not make the voluntary catalog the only path. Glazing, frame, hardware, perimeter gaps, installation, map, project, local amendments, and official approval remain checks.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"wui-door-vs-fire-door","title":"WUI doors versus 20-minute fire doors","url":"/guides/wui-door-vs-fire-door/"},"source":{"title":"2025 California Wildland-Urban Interface Code construction notes, Section 504.9","url":"https://mccmeetingspublic.blob.core.usgovcloudapi.net/truckeeca-meet-b4e3431e34524152945f1977841011c4/ITEM-Attachment-001-59998400eff64dacbed9b4337d86e20a.pdf","publisher":"Town of Truckee public record","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:zone-0-california-oregon-firewise:1","anchor":"local-us-ca-zone-0-california-oregon-firewise-1","place":"California Board of Forestry Zone 0 (as of 23 August 2026)","placeId":"us-ca","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"The Board voted unanimously on 19 August 2026 to approve Zone 0 regulations for State Responsibility Areas and Very High Fire Hazard Severity Zones in Local Responsibility Areas. Staff expected OAL review and an effective date as early as September 2026. New construction would comply on the effective date. Existing structures would phase in over five years, with education first. The vote is not, by itself, an in-force lot rule.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"zone-0-california-oregon-firewise","title":"Zone 0 in California, Oregon, Firewise, and IBHS","url":"/guides/zone-0-california-oregon-firewise/"},"source":{"title":"California Board of Forestry August 2026 Zone 0 decision memo","url":"https://34c031f8-c9fd-4018-8c5a-4159cdff6b0d-cdn-endpoint.azureedge.net/-/media/bof-website/board-meeting-information/monthly-board-binder-materials/archive/2026-monthly-board-binder-materials-workshop-archives/august-2026/full/full-8a-full-board-decision-memo-august-2026.pdf","publisher":"California Board of Forestry and Fire Protection","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","notes":"Staff memo before the 19 August 2026 vote. Describes OAL filing and a possible September 2026 effective date. Confirm the Secretary of State filing before treating the rule as in force."}},{"id":"category:landscaping:2","anchor":"local-us-ca-landscaping-2","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":"safer-from-wildfires","claim":"Insurers that rate on wildfire must credit named property and community measures, including clearing combustibles within 5 feet and noncombustible materials for fences and gates within 5 feet of the structure. That is a California insurance-credit rule, not Oregon law and not a building permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"landscaping","title":"Zone 0 landscaping","url":"/build/landscaping/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"category:landscaping:3","anchor":"local-us-ca-landscaping-3","place":"CAL FIRE home-hardening guidance","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Keep Zone 0 as hardscape. Replace attached combustible fencing or gates with a noncombustible option for the first 8 feet. Parallel combustible fences have separate spacing notes on that page.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"category","id":"landscaping","title":"Zone 0 landscaping","url":"/build/landscaping/"},"source":{"title":"Home Hardening","url":"https://www.fire.ca.gov/home-hardening","publisher":"CAL FIRE","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"}},{"id":"guide:zone-bands:3","anchor":"local-us-ca-zone-bands-3","place":"California Safer from Wildfires","placeId":"us-ca","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Credits a five-foot zone, including noncombustible fences and gates. That is California insurance credit, not Oregon law and not a building permit.","asOf":"2026-08-23T00:00:00.000Z","object":{"kind":"guide","id":"zone-bands","title":"Zone 0 versus Zone 1 versus Zone 2","url":"/guides/zone-bands/"},"source":{"title":"Building Communities Safer from Wildfires","url":"https://www.insurance.ca.gov/01-consumers/105-type/95-guides/03-res/upload/Building-Comunities-Safer-from-Wildfires-Updated-030625-V2.pdf","publisher":"California Department of Insurance","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z","documentDate":"2025-03-01T00:00:00.000Z"}}],"local":[]},"placeFocusedGuides":[{"id":"ab-38-disclosure","title":"California AB 38 seller disclosure","url":"/guides/ab-38-disclosure/"},{"id":"california-fair-plan","title":"California FAIR Plan","url":"/guides/california-fair-plan/"},{"id":"cwrc-vs-r327-vs-cwuic","title":"Colorado CWRC versus Oregon R327 versus California CWUIC","url":"/guides/cwrc-vs-r327-vs-cwuic/"},{"id":"how-to-read-a-fhsz-map","title":"How to read a CAL FIRE FHSZ map","url":"/guides/how-to-read-a-fhsz-map/"},{"id":"renters-and-defensible-space","title":"Renters and defensible space","url":"/guides/renters-and-defensible-space/"},{"id":"safer-from-wildfires-not-oregon","title":"Safer from Wildfires is not Oregon law","url":"/guides/safer-from-wildfires-not-oregon/"},{"id":"the-100-foot-rule-on-a-50-foot-lot","title":"The 100-foot rule on a 50-foot lot","url":"/guides/the-100-foot-rule-on-a-50-foot-lot/"},{"id":"what-headwaters-says-hardening-costs","title":"What Headwaters says hardening costs","url":"/guides/what-headwaters-says-hardening-costs/"},{"id":"what-you-can-touch-on-a-rental-or-hoa-lot","title":"What you can touch on a rental or HOA lot","url":"/guides/what-you-can-touch-on-a-rental-or-hoa-lot/"},{"id":"who-can-do-a-defensible-space-assessment","title":"Who can do a defensible-space assessment","url":"/guides/who-can-do-a-defensible-space-assessment/"},{"id":"why-rosemary-is-disputed","title":"Why rosemary is disputed","url":"/guides/why-rosemary-is-disputed/"}],"findings":[{"id":"cal-fire-under-deck-ember-resistant-zone","title":"CAL FIRE puts the under-deck footprint in the ember-resistant zone","url":"/findings/cal-fire-under-deck-ember-resistant-zone/"}],"plants":{"grain":"state","total":716,"nativeDocumented":0,"invasiveOrNoxiousFlagged":220,"fireResistant":292,"keepAway":71,"conflicts":20,"page":"/grow/california/"},"fireEvidencePublicationScope":{"answerGrain":"typed-state-source","sourceCount":4}}