Wildfire rules could apply to every Basalt property
Council will discuss proposed wildfire construction and landscaping standards that could apply town-wide. New buildings and some major renovations could require fire-resistant materials and defensible space.
What it means for you
If I build or substantially renovate in Basalt, I could face new requirements for roofs, siding, windows, decks, fencing and landscaping.
The full picture
Council will hold a 5 p.m. work session on adopting the Colorado Wildfire Resiliency Code, a state-created set of minimum construction and property-maintenance standards intended to reduce wildfire damage. This is a discussion rather than a scheduled ordinance vote. Staff and the town attorney are asking for direction on how broadly the code should apply, what local changes Basalt should make and who should decide requests for exceptions. Any binding adoption would have to return through a future ordinance process that is not scheduled in the supplied agenda.
Colorado Senate Bill 23-166 created the State Wildfire Resiliency Code Board, which developed the code. It took effect July 1, 2025. Senate Bill 25-142 requires local governments to adopt rules meeting or exceeding the state standards. Basalt staff has been working with the Roaring Fork Fire Rescue Authority and neighboring governments on implementation. Basalt already regulates wildfire hazards through its zoning, subdivision and building rules, but the new code would largely replace those provisions. The packet also notes that communities around Colorado are struggling with implementation and that the Colorado Municipal League may seek a delay in state compliance deadlines.
The state map places parts of Basalt in low- and moderate-intensity categories, while other areas are unmapped. Staff’s most consequential local proposal is to treat every property inside town limits as part of the wildland-urban interface—the area where development meets or mixes with vegetation—and to require the stronger Class 2 construction standard regardless of the mapped classification. Class 2 includes Class 1 protections such as Class A roofing, noncombustible gutters and ember-resistant vents, then adds protections for eaves, walls, underfloor spaces, decks, windows, exterior doors and garage-door gaps.
Under the draft, acceptable exterior construction could include noncombustible materials, fire-retardant-treated wood, ignition-resistant products, heavy timber, log walls or certain one-hour fire-rated wall assemblies. Eaves and soffits would need protected undersides. Exterior glass generally would need to be tempered, multilayered, glass block or rated for at least 20 minutes of fire exposure. Exterior doors generally would need noncombustible construction, solid wood at least 1¾ inches thick or a 20-minute fire rating. Unenclosed decks would have to use listed fire-resistant materials, and garage-door perimeter gaps generally could not exceed one-eighth inch.
Landscaping rules are organized in rings around a structure. From zero to five feet, the draft generally calls for hard, noncombustible surfaces such as rock, gravel, concrete, bare earth or pavers, with only approved ignition-resistant plants. No new trees would be allowed there, although qualifying mature trees could remain if pruned and separated from the building. From five to 30 feet, owners would remove dead plant material, avoid large fuel accumulations, prune lower branches and separate tree crowns and shrubs. From 30 to 100 feet, tree crowns generally would need six to 10 feet of spacing. Fences and retaining walls close to structures also could require noncombustible or ignition-resistant materials.
The code would primarily be triggered by new development, new or replacement landscaping and substantial exterior work. The attorney’s memo says ordinary structure-hardening work or other building alterations would not by themselves trigger all landscaping rules, except that replacement of more than 25% of exterior walls would bring the immediate zero-to-five-foot area into compliance. Additions under 500 square feet, limited roof or wall repairs, painting and some small detached structures have exceptions. Existing legal uses generally could continue, but the building official could intervene where a condition presents a distinct danger or where work would make a structure unsafe.
The draft gives the Basalt Building Department authority to review plans, issue permits, inspect work, approve equivalent materials and issue stop-work orders. A property owner seeking a site-specific review of the state wildfire map could submit technical documentation from a qualified wildfire professional addressing vegetation within 300 feet of the parcel, topography, weather and fire behavior. Technical opinions, testing and professional reports requested for an application would be paid for by the owner or applicant. The packet does not provide a proposed permit-fee schedule, town staffing cost, compliance date or estimate of how the rules could change construction and landscaping costs.
A major policy choice is who decides when literal compliance is impractical. The state code allows the building official to approve a modification for an individual property if it remains consistent with the code’s purpose and does not reduce health, life or fire safety. Staff has also discussed making Town Council the decision-maker. That could provide public oversight but make individual decisions slower and more political. Other trade-offs include applying stronger rules to low-risk and unmapped properties, removing vegetation near buildings, preserving mature trees and historic character, and reconciling wildfire safety with the cost and availability of approved materials.
Residents may speak for up to three minutes during the general public-comment period near the start of the regular meeting and may comment again when the wildfire item is called, subject to the mayor’s meeting procedures. Because the discussion begins during the 5 p.m. work session, residents should confirm how public comment will be handled for that session. Written comments can also be emailed to council for inclusion in the public record, particularly on town-wide coverage, renovation triggers, tree rules and who should decide modification requests.