The bill aims to implement the International Wildland Urban Interface Code in Washington State by amending existing laws related to building codes. It reenacts and amends RCW 19.27.031, which outlines the state building code that includes various model codes, now explicitly incorporating the International Wildland Urban Interface Code. The bill mandates that the state building code council adopt this code by November 1, 2029, following the completion of statewide wildfire hazard and base-level wildfire risk maps for each county. Additionally, it allows counties, cities, and towns to adopt the International Wildland Urban Interface Code in whole or in part until 90 days after the completion of the statewide maps.

Furthermore, the bill establishes a framework for the development of wildfire hazard maps and risk assessments, requiring collaboration between the state building code council and various state agencies. It also provides for the creation of a grant program to assist local jurisdictions in developing these maps. The bill emphasizes the importance of aligning defensible space requirements with existing environmental regulations and allows local amendments to the code with the approval of local fire marshals. Overall, the legislation seeks to enhance fire safety in urban-wildland interface areas through updated building standards and local engagement.

Statutes affected:
Original Bill: 19.27.560
Substitute Bill: 19.27.560, 43.30.580