{"id":"us-id","slug":"idaho","name":"Idaho","license":"CC-BY-4.0","placeNode":"/places/us-id.json","construction":{"reviewStatus":"none","applications":[],"localApplications":[{"id":"iwuic-2018-eagle","title":"Eagle 2018 IWUIC overlay application","instrumentId":"iwuic-2018","placeId":"us-id-eagle","status":"active","geographicScope":"mapped-area","scopeSummary":"Eagle applies its locally amended 2018 IWUIC inside the Ordinance 947 overlay to named project classes, subject to the official mapped boundary, the full Table 503.1 outcome, the City-approved Fire Protection Plan exemption, project exceptions, effective-date, and code-official determinations. The 15 joined rows are a conservative subset of product-field paths for IR1, IR2, and IR3; they do not project Table 503.1's IR1 + N.C., Not Required, or Not Permitted outcomes.","requirementIds":["iwuic-2018-class-1-class-a-roof-assembly","iwuic-2018-class-2-class-b-roof-assembly","iwuic-2018-class-3-class-c-roof-assembly","iwuic-2018-roof-profile-closure","iwuic-2018-roof-valley-flashing","iwuic-2018-noncombustible-gutters","iwuic-2018-class-1-2-quarter-inch-vent-mesh","iwuic-2018-class-1-2-multilayered-glazing","iwuic-2018-class-1-2-20-minute-exterior-door","iwuic-2018-class-1-2-noncombustible-exterior-door","iwuic-2018-class-1-2-solid-core-exterior-door","iwuic-2018-class-1-2-noncombustible-exterior-wall","iwuic-2018-class-1-2-noncombustible-deck","iwuic-2018-class-1-noncombustible-eave","iwuic-2018-class-2-solid-eave-enclosure"],"requirementCoverage":"partial","requirementCoverageSummary":"The 15 joined rows are reviewed, unchanged 2018 product-field paths for IR1, IR2, and IR3. This is a conservative subset, not full Table 503.1 or Chapter 5 normalization: IR1 + N.C., Not Required, and Not Permitted outcomes are not projected, and no row establishes applicability to a parcel or project.","requirementScopes":[{"requirementId":"iwuic-2018-class-1-class-a-roof-assembly","scopeKeys":["ignition-resistant-class-1"],"scopeSummary":"The Class A roof path applies only when the official 2018 IWUIC Table 503.1 outcome includes IR1 construction.","sourceSections":["503.1","504.2"]},{"requirementId":"iwuic-2018-class-2-class-b-roof-assembly","scopeKeys":["ignition-resistant-class-2"],"scopeSummary":"The Class B-or-better roof path applies only when the official 2018 IWUIC Table 503.1 outcome includes IR2 construction.","sourceSections":["503.1","505.2"]},{"requirementId":"iwuic-2018-class-3-class-c-roof-assembly","scopeKeys":["ignition-resistant-class-3"],"scopeSummary":"The Class C-or-better roof path applies only when the official 2018 IWUIC Table 503.1 outcome includes IR3 construction.","sourceSections":["503.1","506.2"]},{"requirementId":"iwuic-2018-roof-profile-closure","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2","ignition-resistant-class-3"],"scopeSummary":"The roof-profile closure path applies when the official Table 503.1 outcome includes IR1, IR2, or IR3 construction; this row does not project the table's other outcomes.","sourceSections":["504.2","505.2","506.2"]},{"requirementId":"iwuic-2018-roof-valley-flashing","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2","ignition-resistant-class-3"],"scopeSummary":"The valley-flashing path applies when the official Table 503.1 outcome includes IR1, IR2, or IR3 construction; this row does not project the table's other outcomes.","sourceSections":["504.2.1","505.2.1","506.2.1"]},{"requirementId":"iwuic-2018-noncombustible-gutters","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2","ignition-resistant-class-3"],"scopeSummary":"The gutter-and-downspout path applies when the official Table 503.1 outcome includes IR1, IR2, or IR3 construction; this row does not project the table's other outcomes.","sourceSections":["504.4","505.4","506.4"]},{"requirementId":"iwuic-2018-class-1-2-quarter-inch-vent-mesh","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2"],"scopeSummary":"The quarter-inch mesh path applies only when the official Table 503.1 outcome includes IR1 or IR2 construction; the 2018 model does not carry this atom into IR3 or project the table's other outcomes.","sourceSections":["504.10","505.10"]},{"requirementId":"iwuic-2018-class-1-2-multilayered-glazing","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2"],"scopeSummary":"The multilayered-glazing path applies only when the official Table 503.1 outcome includes IR1 or IR2 construction.","sourceSections":["504.8","505.8"]},{"requirementId":"iwuic-2018-class-1-2-20-minute-exterior-door","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2"],"scopeSummary":"The 20-minute exterior-door path applies only when the official Table 503.1 outcome includes IR1 or IR2 construction.","sourceSections":["504.9","505.9"]},{"requirementId":"iwuic-2018-class-1-2-noncombustible-exterior-door","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2"],"scopeSummary":"The noncombustible exterior-door path applies only when the official Table 503.1 outcome includes IR1 or IR2 construction.","sourceSections":["504.9","505.9"]},{"requirementId":"iwuic-2018-class-1-2-solid-core-exterior-door","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2"],"scopeSummary":"The solid-core exterior-door path applies only when the official Table 503.1 outcome includes IR1 or IR2 construction.","sourceSections":["504.9","505.9"]},{"requirementId":"iwuic-2018-class-1-2-noncombustible-exterior-wall","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2"],"scopeSummary":"The noncombustible exterior-wall path applies only when the official Table 503.1 outcome includes IR1 or IR2 construction.","sourceSections":["504.5","505.5"]},{"requirementId":"iwuic-2018-class-1-2-noncombustible-deck","scopeKeys":["ignition-resistant-class-1","ignition-resistant-class-2"],"scopeSummary":"The noncombustible appendage path applies only when the official Table 503.1 outcome includes IR1 or IR2 construction.","sourceSections":["504.7","505.7"]},{"requirementId":"iwuic-2018-class-1-noncombustible-eave","scopeKeys":["ignition-resistant-class-1"],"scopeSummary":"The noncombustible eave path applies only when the official Table 503.1 outcome includes IR1 construction.","sourceSections":["503.2.1","504.3"]},{"requirementId":"iwuic-2018-class-2-solid-eave-enclosure","scopeKeys":["ignition-resistant-class-2"],"scopeSummary":"The solid eave-enclosure path applies only when the official Table 503.1 outcome includes IR2 construction.","sourceSections":["505.3"]}],"requirementCrosswalk":[{"modelRequirementId":"iwuic-2018-class-1-class-a-roof-assembly","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 Class A roof atom.","sourceSections":["504.2","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-2-class-b-roof-assembly","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR2 Class B-or-better roof atom.","sourceSections":["505.2","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-3-class-c-roof-assembly","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR3 Class C-or-better roof atom.","sourceSections":["506.2","7-1G-4"]},{"modelRequirementId":"iwuic-2018-roof-profile-closure","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 roof-profile closure atom.","sourceSections":["504.2","505.2","506.2","7-1G-4"]},{"modelRequirementId":"iwuic-2018-roof-valley-flashing","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 valley-flashing atom.","sourceSections":["504.2.1","505.2.1","506.2.1","7-1G-4"]},{"modelRequirementId":"iwuic-2018-noncombustible-gutters","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 noncombustible gutter-and-downspout atom.","sourceSections":["504.4","505.4","506.4","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-2-quarter-inch-vent-mesh","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 and IR2 quarter-inch vent-mesh atom.","sourceSections":["504.10","505.10","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-2-multilayered-glazing","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 and IR2 multilayered-glazing atom.","sourceSections":["504.8","505.8","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-2-20-minute-exterior-door","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 and IR2 20-minute exterior-door atom.","sourceSections":["504.9","505.9","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-2-noncombustible-exterior-door","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 and IR2 noncombustible-door atom.","sourceSections":["504.9","505.9","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-2-solid-core-exterior-door","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 and IR2 solid-core-door atom.","sourceSections":["504.9","505.9","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-2-noncombustible-exterior-wall","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 and IR2 noncombustible-wall atom.","sourceSections":["504.5","505.5","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-2-noncombustible-deck","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 and IR2 noncombustible-appendage atom.","sourceSections":["504.7","505.7","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-1-noncombustible-eave","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR1 noncombustible-eave atom.","sourceSections":["503.2.1","504.3","7-1G-4"]},{"modelRequirementId":"iwuic-2018-class-2-solid-eave-enclosure","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Eagle's enumerated amendments do not modify the normalized 2018 IR2 solid-eave enclosure atom.","sourceSections":["505.3","7-1G-4"]}],"map":{"status":"linked-official-tool","summary":"Eagle publishes the Ordinance 947 WUI Overlay District Map as the controlling mapped-area starting point; parcel inclusion and current boundary status remain official determinations.","url":"https://www.cityofeagle.org/DocumentCenter/View/13203/WUI-Overlay-District-Map---Ord-947-11-x-17","source":{"title":"WUI Overlay District Map — Ordinance 947, 11 x 17","url":"https://www.cityofeagle.org/DocumentCenter/View/13203/WUI-Overlay-District-Map---Ord-947-11-x-17","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}},"projectTriggers":[{"summary":"Article 7-1G applies inside the mapped overlay to new subdivisions, new construction, additions, alterations, moving, and change of use for residential, commercial, or industrial structures; the more restrictive conflicting City provision controls.","sourceSections":["7-1G-2"],"source":{"title":"Eagle City Code 7-1G-2 Applicability","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16709","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"summary":"A project or development with a City-approved Fire Protection Plan prepared by a Certified Wildfire Mitigation Specialist or stamped by a Fire Protection Engineer is exempt from Article 7-1G.","sourceSections":["7-1G-2"],"source":{"title":"Eagle City Code 7-1G-2 Applicability","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16709","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"summary":"The 2018 IWUIC Table 503.1 uses official wildfire-hazard severity, water-supply conformity, and defensible-space conformity. Its outcomes include IR1, IR2, IR3, IR1 + N.C., Not Required, and Not Permitted; the map alone establishes none of them, and this application projects only the 15 modeled IR1/IR2/IR3 product-field rows.","sourceSections":["503.1","Table 503.1"],"source":{"title":"2018 International Wildland-Urban Interface Code, Chapter 5","url":"https://codes.iccsafe.org/content/IWUIC2018/chapter-5-special-building-construction-regulations","publisher":"International Code Council","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2017-08-01T00:00:00.000Z"}},{"summary":"Chapter 5 excludes qualifying accessory structures no larger than 120 square feet and agricultural buildings when each is at least 50 feet from habitable space; the code official must confirm the exception.","sourceSections":["501.1"],"source":{"title":"2018 International Wildland-Urban Interface Code, Section 501.1","url":"https://codes.iccsafe.org/content/IWUIC2018/chapter-5-special-building-construction-regulations","publisher":"International Code Council","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2017-08-01T00:00:00.000Z"}},{"summary":"Section 507 reaches roof covering replacement or repair when the affected area equals or exceeds 25 percent of the total roof area within any 12-month period; project history and official review remain necessary.","sourceSections":["507"],"source":{"title":"2018 International Wildland-Urban Interface Code, Section 507","url":"https://codes.iccsafe.org/content/IWUIC2018/chapter-5-special-building-construction-regulations","publisher":"International Code Council","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2017-08-01T00:00:00.000Z"}}],"localAmendments":[{"kind":"modification","section":"7-1G-3","summary":"Eagle adopts the 2018 IWUIC including Appendices A and B within the limits of the Ordinance 947 overlay, subject to the City's amendments.","source":{"title":"Eagle City Code 7-1G-3 International Wildland-Urban Interface Code Adopted","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16712","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"kind":"exception","section":"7-1G-2","summary":"A City-approved qualifying Fire Protection Plan exempts the project or development from Article 7-1G; this exemption must be resolved before any Chapter 5 material row is presented as applicable.","source":{"title":"Eagle City Code 7-1G-2 Applicability","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16709","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"kind":"addition","section":"7-1G-4 / 108.5","summary":"The code official may require land abutting or contiguous to the overlay to have a Wildfire Safety and Mitigation Plan; that planning authority does not extend the Chapter 5 material application beyond the mapped overlay.","source":{"title":"Eagle City Code 7-1G-4 IWUI Code Amendments","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16714","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"kind":"modification","section":"7-1G-4 / 602.1","summary":"Eagle allows the code official to require an approved automatic sprinkler system for new buildings required to meet Class 1 ignition-resistant construction; this discretionary system condition is separate from product matches.","source":{"title":"Eagle City Code 7-1G-4 IWUI Code Amendments","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16714","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"kind":"modification","section":"7-1G-4 / Appendix B","summary":"Eagle expands the vegetation-management plan content, maintenance, funding, five-year audit, qualification, and post-occupancy change provisions; these project-plan duties are not plant-species approvals.","source":{"title":"Eagle City Code 7-1G-4 IWUI Code Amendments","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16714","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}}],"supportingSources":[{"title":"Eagle City Code 7-1G-2 Applicability","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16709","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"},{"title":"Eagle City Code 7-1G-4 IWUI Code Amendments","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16714","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"},{"title":"City of Eagle Plans and Maps","url":"https://www.cityofeagle.org/1820/Plans-Maps","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"},{"title":"2018 International Wildland-Urban Interface Code, Chapter 5","url":"https://codes.iccsafe.org/content/IWUIC2018/chapter-5-special-building-construction-regulations","publisher":"International Code Council","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2017-08-01T00:00:00.000Z"}],"unresolvedPredicates":["official-boundary","official-hazard-map","official-hazard-class","project-type","effective-date","official-confirmation"],"source":{"title":"Eagle City Code 7-1G-3 International Wildland-Urban Interface Code Adopted","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16712","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-26T00:00:00.000Z"}],"requirements":[],"sources":[{"title":"Idaho Code 39-4109 Application of codes","url":"https://legislature.idaho.gov/statutesrules/idstat/title39/t39ch41/sect39-4109/","publisher":"Idaho Legislature","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z"},{"title":"Idaho Code 39-4116 Local government adoption and enforcement of building codes","url":"https://legislature.idaho.gov/statutesrules/idstat/title39/t39ch41/sect39-4116/","publisher":"Idaho Legislature","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z"}]},"localAuthorities":[{"id":"us-id-boise","name":"Boise","kind":"city","recordType":"local-code","topics":["construction","fire-access"],"page":"/places/idaho/boise/"},{"id":"us-id-eagle","name":"Eagle","kind":"city","recordType":"local-code","topics":["construction","fire-access"],"page":"/places/idaho/eagle/"}],"claims":{"exact":[{"id":"guide:covering-vs-assembly:12","anchor":"local-us-id-covering-vs-assembly-12","place":"Idaho statewide (no IWUIC on the adopted list)","placeId":"us-id","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Idaho Code 39-4109 does not adopt IWUIC. There is no statewide IWUIC Class A roof. A local overlay such as Eagle 7-1G may still require one.","asOf":"2026-08-24T00:00:00.000Z","object":{"kind":"guide","id":"covering-vs-assembly","title":"Covering versus assembly","url":"/guides/covering-vs-assembly/"},"source":{"title":"Idaho Code 39-4109 Application of codes","url":"https://legislature.idaho.gov/statutesrules/idstat/title39/t39ch41/sect39-4109/","publisher":"Idaho Legislature","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z"}},{"id":"guide:fire-resistant-is-not-fireproof:1","anchor":"local-national-fire-resistant-is-not-fireproof-1","place":"OSU Extension PNW 590 (October 2023)","placeId":null,"placeIds":["us-id","us-or","us-wa"],"scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The publication prints Fire-resistant does not mean fireproof. Even fire-resistant plants will burn if not well maintained. Be sure to keep all of your landscape plants healthy with appropriate watering, proper pruning, etc. Fire-resistant plants are those that do not readily ignite from a flame or other ignition sources. These plants can be damaged or even killed by fire. However, they tend to produce fewer embers. Taking HIZ actions does not ensure that a home or community will survive a wildfire.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"fire-resistant-is-not-fireproof","title":"Fire-resistant is not fireproof","url":"/guides/fire-resistant-is-not-fireproof/"},"source":{"title":"Fire-resistant Plants for Home Landscapes (PNW 590)","url":"https://extension.oregonstate.edu/catalog/pub/pnw-590-fire-resistant-plants-home-landscapes","publisher":"Oregon State University Extension Service (with WSU Extension and University of Idaho Extension)","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2023-10-01T00:00:00.000Z"}},{"id":"guide:how-oregon-got-the-deepest-page:1","anchor":"local-national-how-oregon-got-the-deepest-page-1","place":"OSU Extension PNW 590 (revised October 2023)","placeId":null,"placeIds":["us-id","us-or","us-wa"],"scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Joint Oregon / Washington / Idaho Extension publication (Detweiler, Fitzgerald, Cowan, Bell, Stokely). Figure 1 zones from 0–5, 5–30, and 30–100 feet are based on the National Fire Protection Association’s Home Ignition Zone. The plant list was developed from existing scientific literature on plant flammability. The research on plant flammability, especially for ornamental plants, is limited. Most listed plants require some irrigation to survive summer months, particularly in drier regions. At the time of printing, none of the plants listed were on state noxious weed lists in Oregon, Washington, or Idaho. Always check with local Extension or a nursery.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"how-oregon-got-the-deepest-page","title":"How Oregon got a deep plant page","url":"/guides/how-oregon-got-the-deepest-page/"},"source":{"title":"Fire-resistant Plants for Home Landscapes (PNW 590)","url":"https://extension.oregonstate.edu/catalog/pub/pnw-590-fire-resistant-plants-home-landscapes","publisher":"Oregon State University Extension Service / Washington State University Extension / University of Idaho Extension","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2023-10-01T00:00:00.000Z"}},{"id":"guide:how-to-read-a-plant-page:1","anchor":"local-us-id-how-to-read-a-plant-page-1","place":"Idaho Firewise plant database","placeId":"us-id","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"The Idaho Firewise master database lists Vitis spp., common name Grapes, with a fire-resistance score of 8 of 10.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"how-to-read-a-plant-page","title":"How to read a plant page","url":"/guides/how-to-read-a-plant-page/"},"source":{"title":"Fire Resistance of Plants Master Database","url":"https://idahofirewise.org/wp-content/uploads/2017/04/FireXResistanceXofXPlantsXMasterXDatabase.pdf","publisher":"Idaho Firewise","sourceType":"secondary","accessedOn":"2026-08-25T00:00:00.000Z"}},{"id":"guide:idaho-wui-code-status:1","anchor":"local-us-id-idaho-wui-code-status-1","place":"Idaho statewide (no IWUIC on the adopted list)","placeId":"us-id","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Idaho Code 39-4109 adopts the IBC, the Idaho residential code, the energy code, and the IEBC for the Division of Occupational and Professional Licenses, applied by local governments under 39-4116. IWUIC is not on that list. 39-4116 says locals that issue permits are not required to adopt the other referenced codes in the IBC.","asOf":"2026-08-24T00:00:00.000Z","object":{"kind":"guide","id":"idaho-wui-code-status","title":"Idaho WUI code status","url":"/guides/idaho-wui-code-status/"},"source":{"title":"Idaho Code 39-4109 Application of codes","url":"https://legislature.idaho.gov/statutesrules/idstat/title39/t39ch41/sect39-4109/","publisher":"Idaho Legislature","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z"}},{"id":"standard:iwuic:14","anchor":"local-us-id-iwuic-14","place":"Idaho statewide (no IWUIC on the adopted list)","placeId":"us-id","scopeKind":"place","scopeMode":"descendants","scopeRef":"iwuic","claim":"Idaho Code 39-4109 adopts the IBC, the Idaho residential code, the energy code, and the IEBC. IWUIC is not on that list. 39-4116 says locals that issue permits are not required to adopt the other referenced codes in the IBC. A city may still adopt IWUIC locally.","asOf":"2026-08-24T00:00:00.000Z","object":{"kind":"standard","id":"iwuic","title":"International Wildland-Urban Interface Code","url":"/standards/iwuic/"},"source":{"title":"Idaho Code 39-4109 Application of codes","url":"https://legislature.idaho.gov/statutesrules/idstat/title39/t39ch41/sect39-4109/","publisher":"Idaho Legislature","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z"}},{"id":"guide:is-sagebrush-a-hazard-in-idaho:1","anchor":"local-us-id-is-sagebrush-a-hazard-in-idaho-1","place":"Idaho Firewise Garden signage","placeId":"us-id","scopeKind":"place","scopeMode":"descendants","scopeRef":null,"claim":"Idaho’s state flower, syringa (mock orange), is named on the fire-resistant native plants panel. Suitable natives include mock orange, creeping Oregon grape, and low-growing perennials such as black-eyed Susan. Avoid juniper, sagebrush, or pine that burn easily when they dry out in late summer and fall. Zone 1 is 0–5 feet, Firewise plants only. Zone 2 is 5–30 feet, reduce density. Zone 3 is 30–100 feet, thin and prune. Zone 3 native plantings, including sagebrush, should be thinned, pruned, and maintained to reduce underlying grasses. Other sagebrush-steppe brush includes bitterbrush and rabbitbrush. Sagebrush is flammable because of its oil content and should not be located in Zone 1 or Zone 2.","asOf":"2026-08-25T00:00:00.000Z","object":{"kind":"guide","id":"is-sagebrush-a-hazard-in-idaho","title":"Is sagebrush a hazard in Idaho","url":"/guides/is-sagebrush-a-hazard-in-idaho/"},"source":{"title":"Idaho Firewise Garden Signage","url":"https://assets.idahofirewise.org/wp-content/uploads/2024/06/Idaho-Firewise-Garden-Signage.pdf","publisher":"Idaho Firewise","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2024-06-01T00:00:00.000Z"}}],"local":[{"id":"guide:covering-vs-assembly:16","anchor":"local-us-id-boise-covering-vs-assembly-16","place":"Boise IR1 Class A roof (IFC Chapter 41)","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Boise 4109.2 requires IR1 roofs to be a Class A assembly or covering tested to ASTM E108 or UL 790, with profile gaps at the eave firestopped or covered with ASTM D3909 72-pound cap sheet. That is Boise Chapter 41, not Idaho statewide IWUIC. Confirm the IR class with the fire code official.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"covering-vs-assembly","title":"Covering versus assembly","url":"/guides/covering-vs-assembly/"},"source":{"title":"Boise City Code 5-12-53 Chapter 41 Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-78729","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:covering-vs-assembly:17","anchor":"local-us-id-eagle-covering-vs-assembly-17","place":"Eagle 2018 IWUIC overlay","placeId":"us-id-eagle","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Eagle 7-1G-3 adopts the 2018 IWUIC, including Appendices A and B, inside the mapped overlay. 7-1G-4 does not amend §504.2. 2018 IWUIC §504.2 requires a Class A roof assembly tested to ASTM E108 or UL 790 for Class 1 ignition-resistant construction. That is not Idaho statewide. Confirm the overlay class with the building official.","asOf":"2026-08-24T00:00:00.000Z","object":{"kind":"guide","id":"covering-vs-assembly","title":"Covering versus assembly","url":"/guides/covering-vs-assembly/"},"source":{"title":"Eagle City Code 7-1G International Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16709","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"id":"guide:fence-as-wick:8","anchor":"local-us-id-boise-fence-as-wick-8","place":"Boise Chapter 41 fence trigger","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Boise 4111.1 applies to new fence installations and replacement of existing fence sections. Within the local WUI code, all fence or gate sections within eight feet of a habitable structure must be noncombustible, and combustible fencing is not allowed in that band. This is Boise code, not Idaho statewide and not CAL FIRE guidance.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"fence-as-wick","title":"Fence as a wick","url":"/guides/fence-as-wick/"},"source":{"title":"Boise City Code 5-12-53 Chapter 41 Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-78729","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:fire-apparatus-access:7","anchor":"local-us-id-boise-fire-apparatus-access-7","place":"Boise WUI-O access vegetation clearance","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Boise 11-02-07.3.H(7) sends access roads, driveways, driveway turnarounds, and turnouts to the applicable International Fire Code and Boise City Code rather than printing one width in the overlay subsection. It authorizes the fire code official to require non-fire-resistive vegetation cleared within 10 feet on each side of portions of fire-apparatus access roads and driveways. Single trees, ornamental fuels, and cultivated groundcover are excluded unless the official finds that they readily transmit fire. Confirm the governing geometry and any clearance order.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"fire-apparatus-access","title":"Fire apparatus access on the lot","url":"/guides/fire-apparatus-access/"},"source":{"title":"Boise City Code 11-02-07.3.H WUI-O Overlay District","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-65766","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:gutters-and-debris:5","anchor":"local-us-id-boise-gutters-and-debris-5","place":"Boise IR1 gutters (IFC Chapter 41)","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Boise 4109.4 requires gutters and downspouts of noncombustible material, with an approved means to prevent accumulation of leaves and debris in the gutter. That is IR1 Chapter 41, not Idaho statewide. Confirm the IR class with the fire code official.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"gutters-and-debris","title":"Gutters and debris as an ember bed","url":"/guides/gutters-and-debris/"},"source":{"title":"Boise City Code 5-12-53 Chapter 41 Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-78729","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:gutters-and-debris:6","anchor":"local-us-id-eagle-gutters-and-debris-6","place":"Eagle 2018 IWUIC gutters","placeId":"us-id-eagle","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Eagle 7-1G-3 adopts the 2018 IWUIC, and the reviewed adopted-unchanged crosswalk keeps noncombustible gutters and downspouts under 504.4, 505.4, and 506.4 for IR1, IR2, and IR3. The normalized atom does not establish a debris-prevention device. The official overlay map, full Table 503.1 outcome, project, Fire Protection Plan exception, and City confirmation remain separate checks.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"gutters-and-debris","title":"Gutters and debris as an ember bed","url":"/guides/gutters-and-debris/"},"source":{"title":"Eagle City Code 7-1G-3 International Wildland-Urban Interface Code Adopted","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16712","publisher":"City of Eagle / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"id":"guide:how-wui-is-mapped:15","anchor":"local-us-id-boise-how-wui-is-mapped-15","place":"Boise WUI areas (IFC Chapter 41)","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Boise 4105.1 lets the fire code official declare WUI and IR construction areas from best available data. 4105.2 records those areas on maps available for inspection. IR1 generally depicts foothills; IR2 generally depicts valley, desert, and occluded areas. Confirm with the fire code official.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"how-wui-is-mapped","title":"How the WUI is mapped","url":"/guides/how-wui-is-mapped/"},"source":{"title":"Boise City Code 5-12-53 Chapter 41 Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-78729","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:how-wui-is-mapped:16","anchor":"local-us-id-eagle-how-wui-is-mapped-16","place":"Eagle IWUIC overlay (2018)","placeId":"us-id-eagle","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Eagle 7-1G-2 applies to new construction inside the overlay district shown on the Wildland-Urban Interface Overlay District Map adopted by Ordinance 947. That map is posted on the city’s Plans & Maps page. A City-approved Fire Protection Plan can exempt a project from this article.","asOf":"2026-08-24T00:00:00.000Z","object":{"kind":"guide","id":"how-wui-is-mapped","title":"How the WUI is mapped","url":"/guides/how-wui-is-mapped/"},"source":{"title":"Eagle City Code 7-1G International Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16709","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"id":"standard:iwuic:8","anchor":"local-us-id-boise-iwuic-8","place":"Boise IFC Chapter 41 WUI","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":"iwuic","claim":"Boise City Code 5-12-53 adds IFC Chapter 41 WUI. Section 4107 requires construction in mapped WUI areas. Section 4109 is IR1, including a Class A roof under 4109.2. Boise 5-12-2 still adopts the 2018 IFC, and 5-12-56 references the 2018 IWUIC. That is not Idaho statewide IWUIC. Confirm the overlay with the fire code official.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"standard","id":"iwuic","title":"International Wildland-Urban Interface Code","url":"/standards/iwuic/"},"source":{"title":"Boise City Code 5-12-53 Chapter 41 Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-78729","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"standard:iwuic:21","anchor":"local-us-id-eagle-iwuic-21","place":"Eagle IWUIC overlay (2018)","placeId":"us-id-eagle","scopeKind":"place","scopeMode":"exact","scopeRef":"iwuic","claim":"Eagle 7-1G-3 adopts the 2018 IWUIC including Appendices A and B inside the Ordinance 947 overlay. 7-1G-2 limits Article 7-1G to named work inside the map and exempts a qualifying City-approved Fire Protection Plan. 7-1G-4 leaves Chapter 5 unchanged, while allowing an abutting-land mitigation plan without extending Chapter 5 beyond the overlay. The 15 modeled material rows do not project Table 503.1's IR1 + N.C., Not Required, or Not Permitted outcomes. Confirm the parcel, project, full table outcome, date, and approval with the code official.","asOf":"2026-08-26T00:00:00.000Z","object":{"kind":"standard","id":"iwuic","title":"International Wildland-Urban Interface Code","url":"/standards/iwuic/"},"source":{"title":"Eagle City Code 7-1G-3 International Wildland-Urban Interface Code Adopted","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16712","publisher":"City of Eagle","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"id":"guide:mesh-vs-listed-vents:6","anchor":"local-us-id-boise-mesh-vs-listed-vents-6","place":"Boise IR1 vents (IFC Chapter 41)","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Boise 4109.10 limits attic, foundation, underfloor, and roof vents to 144 square inches each, covered with noncombustible corrosion-resistant mesh with openings not over 1/8 inch, or designed to prevent flame or ember penetration. 4109.10.1 keeps attic vents out of soffits and eave overhangs unless a fire-rated ember-resistant vent is approved. That is Boise Chapter 41, not Idaho statewide. Confirm the IR class with the fire code official.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"mesh-vs-listed-vents","title":"Mesh versus listed vents","url":"/guides/mesh-vs-listed-vents/"},"source":{"title":"Boise City Code 5-12-53 Chapter 41 Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-78729","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}},{"id":"guide:mesh-vs-listed-vents:7","anchor":"local-us-id-eagle-mesh-vs-listed-vents-7","place":"Eagle 2018 IWUIC vent mesh","placeId":"us-id-eagle","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Eagle 7-1G-3 adopts the 2018 IWUIC, and the reviewed adopted-unchanged crosswalk keeps the model IR1 and IR2 path of noncombustible corrosion-resistant mesh with openings no larger than 1/4 inch. That atom does not carry into IR3. The official overlay map, full Table 503.1 outcome, project, Fire Protection Plan exception, opening area, vent location, and code-official approval remain separate checks.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"mesh-vs-listed-vents","title":"Mesh versus listed vents","url":"/guides/mesh-vs-listed-vents/"},"source":{"title":"Eagle City Code 7-1G-3 International Wildland-Urban Interface Code Adopted","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16712","publisher":"City of Eagle / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"id":"guide:overlay-map-decides-construction:1","anchor":"local-us-id-eagle-overlay-map-decides-construction-1","place":"Eagle IWUIC overlay (2018)","placeId":"us-id-eagle","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"7-1G-3 adopts the 2018 IWUIC including Appendices A and B inside the overlay district. 7-1G-2 applies that article to new construction, additions, alterations, moving, and change of use on the Ordinance 947 map, and exempts a city-approved Fire Protection Plan prepared by a Certified Wildfire Mitigation Specialist or stamped by a Fire Protection Engineer. 7-1G-4 lets the official require a mitigation plan on lots that abut the overlay. Confirm with the building official.","asOf":"2026-08-26T00:00:00.000Z","object":{"kind":"guide","id":"overlay-map-decides-construction","title":"When the overlay map decides the eave","url":"/guides/overlay-map-decides-construction/"},"source":{"title":"Eagle City Code 7-1G-3 International Wildland-Urban Interface Code Adopted","url":"https://codelibrary.amlegal.com/codes/eagleid/latest/eagle_id/0-0-0-16712","publisher":"City of Eagle, Idaho","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-08-12T00:00:00.000Z"}},{"id":"guide:zone-bands:6","anchor":"local-us-id-boise-zone-bands-6","place":"Boise Chapter 41 defensible space","placeId":"us-id-boise","scopeKind":"place","scopeMode":"exact","scopeRef":null,"claim":"Boise 4115.3 requires at least 30 feet of fuel modification in designated WUI areas, measured horizontally from the building perimeter or projection, with a lot-line exception and authority for the official to require more. Section 4115.3.4 requires a five-foot fuel-free area around structures using only approved fire-resistant vegetation and noncombustible mulch. For existing structures built before 2011, Section 4115.1 applies the provision only when the fire code official finds a distinct hazard to life or property. These are Boise rules, not Idaho statewide bands and not an IBHS score.","asOf":"2026-08-27T00:00:00.000Z","object":{"kind":"guide","id":"zone-bands","title":"Zone 0 versus Zone 1 versus Zone 2","url":"/guides/zone-bands/"},"source":{"title":"Boise City Code 5-12-53 Chapter 41 Wildland-Urban Interface Code","url":"https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-78729","publisher":"City of Boise / American Legal Publishing","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}}]},"placeFocusedGuides":[{"id":"idaho-wui-code-status","title":"Idaho WUI code status","url":"/guides/idaho-wui-code-status/"},{"id":"is-sagebrush-a-hazard-in-idaho","title":"Is sagebrush a hazard in Idaho","url":"/guides/is-sagebrush-a-hazard-in-idaho/"},{"id":"overlay-map-decides-construction","title":"When the overlay map decides the eave","url":"/guides/overlay-map-decides-construction/"}],"findings":[],"plants":{"grain":"state","total":661,"nativeDocumented":0,"invasiveOrNoxiousFlagged":104,"fireResistant":422,"keepAway":32,"conflicts":15,"page":"/grow/idaho/"},"fireEvidencePublicationScope":{"answerGrain":"typed-state-source","sourceCount":2}}