Colorado Assembly passes bill redefining wildland-urban interface for wildfire resilience

The Colorado State Legislature introduced Senate Bill 142 on April 15, 2025, aimed at enhancing wildfire resilience across the state. The bill proposes significant changes to the composition and responsibilities of the Wildfire Resiliency Code Board, which is tasked with developing standards for structures in areas vulnerable to wildfires.

One of the bill's key provisions is the restructuring of the board, which will now include representatives from urban and rural municipalities, as well as a state water engineer or their designee. Notably, the bill removes four members, including those representing hazard mitigation professionals and affordable housing builders, raising concerns about the board's ability to address diverse perspectives on wildfire resilience.

Additionally, the bill redefines the "wildland-urban interface," a critical area where wildfires pose a significant threat. Under the new definition, this interface includes land within three miles of large cities, transit-oriented communities, or areas zoned for high-density housing. This change aims to better target areas that require enhanced wildfire mitigation strategies.

Counties will be required to create and submit a wildland-urban interface map to their boards of county commissioners by July 1, 2026. Following this, the Wildfire Resiliency Code Board will adopt minimum codes and standards for wildfire resilience by January 1, 2027. Local governing bodies will then have one year to implement these standards.

The bill has sparked debates among lawmakers and stakeholders, particularly regarding the removal of certain board members and the implications for affordable housing initiatives. Critics argue that the absence of voices from nonprofit builders could hinder efforts to create resilient yet affordable housing options for low-income populations.

The implications of Senate Bill 142 are significant, as Colorado has faced increasing wildfire threats in recent years. Experts suggest that the bill could lead to improved safety measures and building practices, potentially reducing the risk of catastrophic wildfires. However, the effectiveness of the new standards will largely depend on the engagement of local governments and the ability to balance resilience with housing affordability.

As the bill progresses through the legislative process, its impact on Colorado's wildfire preparedness and housing landscape will be closely monitored by both supporters and opponents.