Pitkin County adopts statewide Colorado Wildfire Resiliency Code into local building and land-use rules

Pitkin County commissioners adopted March 25 the Colorado Wildfire Resiliency Code (CWRC) provisions into the county's building code and approved companion land-use amendments to align local rules with the statewide model code.

Jeff Ericen, the county's chief building official, said the state model (based on the 2024 International Wildland-Urban Interface Code and the Home Ignition Guide) must be adopted into the building code by July 1; the county inserted CWRC provisions into Title 11 (building code) so they can take effect without creating vesting conflicts. Staff emphasized that much of Pitkin County's wildfire work already aligns with model expectations.

Edits since first reading: staff and fire partners refined language to restrict vinyl/polymer windows and certain polymer fencing within very close proximity to structures in the highest intensity zones, clarified defensible-space provisions (including a change from two to three sampling periods in a monitoring threshold elsewhere in the meeting) and added ground-truthing procedures for mapped intensity zones.

Implementation and outreach: staff will host a CWRC implementation webinar on April 7, provide community and staff training in April, and coordinate with fire districts to offer property-level assessments and mitigation guidance. Fire chiefs described plans to perform ground-truth assessments and work with property owners where mapped intensity differs from on-the-ground conditions.

Why it matters: The CWRC creates a statewide baseline for wildfire-resistant construction and site design; local adoption affects new construction, major remodels and some building additions and provides a consistent mitigation framework for insurance and safety planning.

Board action: The commission adopted both the building-code insertion and the land-use amendments on second reading. Staff and fire partners emphasized outreach and technical assistance to homeowners to implement defensible-space and material requirements, and noted the code is prospective (it does not mandate retrofit work on existing homes unless significant construction activity occurs).