King County encourages cool roofs and reflective surfaces through the Washington State Energy Code and green building incentives, especially for large commercial reroofs in unincorporated areas and Metro facilities.
The Washington State Energy Code, adopted under RCW 19.27A and enforced through KCC Title 16, sets reflectance and emittance options for low-slope commercial reroof projects and new construction. King County's Green Building program offers expedited permitting and incentive points when projects use cool roofing, high solar reflectance index pavement, or vegetated roofs. Residential cool-roof standards are voluntary, but the SCAP and heat-island mitigation strategies push wider adoption near transit corridors and dense neighborhoods.
Cool-roof requirements appear during permit review for covered commercial reroofs; non-compliance results in permit denial or required redesign rather than ticketing of the homeowner.
Redmond, WA
Redmond does not ban gas leaf blowers, but restricts their use to daytime hours under RMC 6.32. Residential yard equipment is permitted between 7 AM and 10 P...
Redmond, WA
Industrial-source noise received in Redmond residential areas may not exceed 60 dBA daytime and 50 dBA nighttime under RMC 6.32 and WAC 173-60. Overlake and ...
Redmond, WA
Redmond generally allows overnight residential street parking within the 72-hour continuous-parking limit. Downtown time zones, snow events, and posted no-pa...
Redmond, WA
Redmond restricts on-street RV and boat parking to 72 hours and regulates driveway storage under RMC Title 21. Many zones limit the number of recreational ve...
Redmond, WA
Redmond regulates driveway width, surfacing, and apron construction under RMC Title 21 and Public Works standards. Residential driveways are typically 10-24 ...
Redmond, WA
Standard residential fences up to 6 feet in side and rear yards and 4 feet in front yards do not require a building permit in Redmond. Permits are needed for...
Side-by-side rule comparisons with other cities in King County.
See how Redmond's cool roof requirements rules stack up against other locations.
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