07/13/2026
Colorado Wildfire Code Update:
Driven by increasingly destructive fire seasons, Colorado is updating its building and wildfire codes to reduce structural vulnerability, focusing heavily on protecting homes from wind-driven embers, which research shows are the primary cause of home ignitions. Established under Senate Bill 23-166, the newly formed Wildfire Resiliency Code Board is developing statewide standards that classify regions into low, moderate, and high hazard zones, though individual counties and municipalities retain final enforcement authority. These updated codes mandate strict "defensible space" planning, requiring property owners to actively clear vegetation and fuel sources in the critical 0–30 foot zone around a structure and manage vegetation out to 100 feet to slow a fire's spread. On the construction front, material selection is heavily restricted: vulnerable options like untreated wood shake roofing and melt-prone vinyl siding are being phased out in favor of Class A-rated roofing assemblies, metal gutters, and specialized vent screens capable of blocking tiny, airborne embers. While minor repairs and interior renovations remain exempt, these strict hardening measures and defensible space audits are automatically triggered for all new construction, accessory dwelling units (ADUs), structural additions exceeding 500 square feet, or any renovation that modifies more than 25% of an existing roof or exterior wall.
