King County buildings must meet the Washington State Energy Code under RCW 19.27A, one of the strictest in the nation; the county's Strategic Climate Action Plan also drives green-building incentives toward carbon neutrality by 2050.
All new construction and major remodels in King County must comply with the Washington State Energy Code (WSEC), adopted statewide under RCW 19.27A and updated on a three-year cycle by the State Building Code Council. The 2021 WSEC restricts most natural-gas space and water heating in new commercial and large multifamily projects, pushing electrification. King County's Strategic Climate Action Plan (SCAP, 2020 update) targets carbon neutrality by 2050, and the King County Green Building Program offers incentives, technical assistance, and LEED/Built Green tracking for unincorporated projects. Local Services Permitting reviews energy-code compliance alongside structural plan review.
Failing energy-code compliance is a building-code violation under RCW 19.27A, with corrections required before final permit approval and certificate of occupancy issuance.
Auburn, WA
Auburn applies WAC 173-60 EDNA limits through ACC 8.28. Residential: 55 dBA day, 45 dBA night. Industrial receiving: 60 dBA day, 50 dBA night. Measured at th...
Auburn, WA
Industrial sources into residential zones are capped at 60 dBA day and 50 dBA night under WAC 173-60 via ACC 8.28. The Boeing Auburn plant and Valley warehou...
Auburn, WA
Federal law preempts local aircraft noise. Auburn Municipal Airport follows FAA Part 150 and Sea-Tac overflights are under FAA and Port of Seattle. ACC 8.28 ...
Auburn, WA
Outdoor concerts and festivals must meet ACC 8.28 limits and often need a special event permit. Downtown Auburn and Les Gove Park events follow a written noi...
Auburn, WA
Auburn restricts RV, trailer, and boat parking on public streets to 72 hours and sets additional limits on driveway and front-yard storage of recreational ve...
Auburn, WA
EV charging in Auburn follows the Washington State Energy Code, which requires EV-ready capacity in new multifamily and commercial parking and protects publi...
Side-by-side rule comparisons with other cities in King County.
See how Auburn's green building code rules stack up against other locations.
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