Adoption is a patchwork, and that is the single most important caveat on this whole topic. Statute required local governing bodies with WUI areas to adopt a code meeting or exceeding the state minimum by April 1, 2026, and to be enforcing by July 1, 2026. Some adopted on time, some adopted amended versions, some declined, and some missed the deadline. Enforcement is entirely local, so your county or town building department is the only authority on your address.
How the code came to be
SB23-166, signed May 12, 2023, created the 21-member Wildfire Resiliency Code Board inside the Division of Fire Prevention and Control and charged it with adopting statewide minimum codes for hardening structures and reducing risk in the WUI, and with defining the WUI itself. The board adopted the 2025 Colorado Wildfire Resiliency Code on July 1, 2025 through rule 8 CCR 1507-39. It is based on the 2024 International Wildland-Urban Interface Code with Colorado amendments, and it references the 2024 International Building Code and the Colorado State Forest Service Home Ignition Zone Guide.
A common mix-up worth correcting: HB24-1091 did not create this code. That separate law prohibits homeowners associations from banning fire-hardened building materials. The code comes from SB23-166.
The timeline and the delay bill that failed
In 2026 the Colorado Municipal League and others backed HB26-1334 to push the local adoption deadline out a year to April 1, 2027, arguing the code was rushed, the mapping tools arrived late and it amounted to an unfunded mandate. The House Transportation, Housing and Local Government Committee postponed the bill indefinitely on April 7, 2026, six days after the original deadline had already passed. Jurisdictions that held off waiting on the bill were left having missed the mandate with no legislative relief.
- May 12, 2023: SB23-166 signed, board created.
- July 1, 2025: the 2025 CWRC adopted by the board.
- April 1, 2026: statutory deadline for local jurisdictions with WUI areas to adopt.
- April 7, 2026: HB26-1334, the one-year delay bill, postponed indefinitely.
- July 1, 2026: statutory deadline for those jurisdictions to be compliant and enforcing.
Who adopts, and how much they can change
The governing bodies with this duty are city, town and city-and-county councils, fire protection district boards, improvement districts providing fire protection, and county commissioners for unincorporated areas. They may adopt the code as-is, adopt it with local amendments or adopt an alternative, but amendments that would significantly reduce the state standards must be reviewed and approved by the board. Jurisdictions are free to be more stringent. The appendices covering permits, construction documents, and inspection and enforcement apply only where a jurisdiction specifically adopts them.
There is no direct state penalty mechanism for a jurisdiction that simply fails to adopt. The Division of Fire Prevention and Control assists with enforcement only on request from a local code official, and runs an implementation peer exchange to help under-resourced jurisdictions.
Examples of how uneven this is
These are illustrations of the range, current as of research in September 2026, and every one of them needs re-verification before you rely on it.
- Jefferson County runs its own wildfire resiliency code with a Class 1 and Class 2 overlay map for unincorporated areas, effective July 1, 2026.
- Larimer County adopted early, effective January 1, 2026, and declared the entire unincorporated county a wildfire risk area.
- Unincorporated El Paso County took effect July 1, 2026.
- Black Forest Fire Rescue adopted the CWRC alongside the 2021 International Fire Code on December 10, 2025.
- Falcon Fire Protection District passed a resolution in February 2026 not to adopt, citing map inaccuracy and unfunded-mandate concerns.
- Broomfield had not adopted and was still studying local mapping.
- Teller County's final adoption status was unconfirmed and contested at the time of research.
What this means for your project
It means nobody should give you a blanket statewide compliance answer, including us. Before we scope a roof in a wildfire area we confirm the adopted code, the adopted map and the local amendments with the jurisdiction that issues the permit, then put the requirements and the 25% answer in writing with the estimate. We re-check that status regularly, because the board reviews the code periodically and local adoptions keep moving.
Requirements vary by jurisdiction
Colorado's wildfire code is a state minimum, but adoption and enforcement happen locally, and adoption is uneven. Some counties, towns and fire districts adopted the code, some adopted amended or more stringent versions, and some declined. Nothing on this page tells you what applies to your specific address. We confirm the current adopted code and map with your building department before every project in a wildfire area, and we put the answer in writing with the estimate.
Common questions
- Does the Colorado wildfire code apply everywhere in the state?
- No. It applies only inside mapped WUI areas, and only where the local jurisdiction adopted a code meeting or exceeding the state minimum. Enforcement is entirely local, and adoption has been uneven.
- What happened to the bill to delay the code?
- HB26-1334 would have pushed the local adoption deadline to April 1, 2027. The House Transportation, Housing and Local Government Committee postponed it indefinitely on April 7, 2026, six days after the original deadline had already passed.
- Can my county make the requirements stricter than the state code?
- Yes. The state code is a minimum. Jurisdictions may adopt it as-is, amend it, or adopt more stringent requirements. Amendments that would significantly reduce state standards need board review and approval.
Talk to us about your roof
We work out of 9822 Titan Park Cir, Littleton, and cover the Front Range foothills where this code matters most. Call (303) 738-1032 or book an inspection and we will confirm the local requirements, walk the roof, and put the 25% answer in writing with your estimate. Our neighborhood guides and service areas show where we work, and the insurance claim guide covers the documentation side.