King County addresses urban heat islands through tree canopy goals, cool surfaces, and equity-focused investments under the Strategic Climate Action Plan and the 30-year Land Conservation Initiative.
The SCAP and the 2020 King County Comprehensive Plan call for expanding tree canopy in heat-vulnerable communities, including South King County and unincorporated urban pockets. Strategies include parkway tree planting, cool roofs and pavement, green stormwater infrastructure, and incentives for shade in public right-of-way redesigns. The Land Conservation Initiative protects 65,000 acres of forest and trails over 30 years, which also moderates regional summer temperatures along the I-5 and I-405 corridors.
Heat island policies are aspirational; enforcement happens indirectly through tree code, stormwater code, and capital project review rather than household fines.
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 heat island mitigation rules stack up against other locations.
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