2025 Building Code Adoption Tracking: FEMA Region 10

This fact sheet summarizes the adoption status of hazard-resistant building codes in each state within FEMA Region 10 as of 2025. It provides annual metrics on the percentage of communities and populations protected by the 2021 or later International Building Code (IBC) and International Residential Code (IRC), with specific notes on code strengths and weaknesses for flood, wind, and seismic hazards. The document highlights state-by-state variations, including code edition adoption, local enforcement, and modifications that affect hazard resistance. It is intended to inform policymakers, code officials, and emergency managers about regional code adoption trends and gaps.