Seattle has adopted the 2024 construction codes, which encompass updates to the Boiler Code, Building Code, Electrical Code, Energy Code, Existing Building Code, Fuel Gas Code, Mechanical Code, Plumbing Code, and Residential Code. These updates align with the 2021 Washington State Energy Code and the 2021 International Codes, with Seattle-specific amendments. Key changes include increased energy efficiency standards, mandatory EV charging infrastructure in new dwellings, and expanded seismic retrofit requirements for unreinforced masonry buildings. These updates aim to enhance safety, energy efficiency, and resilience to climate change while maintaining affordability considerations.
These updates will significantly improve building safety, energy efficiency, and sustainability in Seattle, helping the city meet its climate goals while also ensuring new constructions are more resilient and energy-efficient.