Grand County adopts 2025 Wildfire Resiliency Code with local exemptions and mapping caveats

Jun 9, 2026

The board adopted the 2025 Colorado Wildfire Resiliency Code with local amendments — including siding and small-structure exemptions, a ban on unreinforced vinyl replacement window frames, and use of a locally adopted WUI map — and expressed 'strong protest' about unfunded state mandates.

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Grand County commissioners voted unanimously to adopt the 2025 Colorado Wildfire Resiliency Code (CWRC) with a set of local amendments aimed at tailoring state requirements to the county’s housing stock and economy. Key local changes include an exemption for home additions under 1,500 square feet from triggering full non-combustible siding upgrades (if the addition uses ignition-resistant siding), allowance for non-combustible wainscoting without forcing whole-house siding conversions, exemptions for detached small structures under 120 square feet, and a prohibition on unreinforced vinyl replacement window frames.

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