Most renovation work in unincorporated King County requires a building permit. Cosmetic work (painting, flooring, cabinets) is exempt. Structural, electrical, plumbing, and mechanical work all require permits. King County adopts the Washington State Building Code, based on the International Residential Code.
King County requires building permits for renovation work that goes beyond minor repairs and cosmetic changes. The county adopts the Washington State Building Code, which is based on the International Residential Code (IRC) with state amendments. Exempt work includes: painting, wallpapering, tiling, carpeting, flooring, cabinet replacement, and countertop installation that does not modify structural elements, plumbing, mechanical, or electrical systems. Work requiring permits includes: structural modifications (removing or adding walls, enlarging openings), all electrical work (new circuits, panel upgrades, outlets — must be performed by a licensed electrician in Washington), all plumbing work (fixture relocation, water heater replacement, sewer line work), HVAC installation or replacement, re-roofing (a re-roof permit is required), window or door replacement that changes the rough opening size, and any work adding habitable square footage. King County permits can be applied for online through MyBuildingPermit.com or at the Department of Local Services offices. Simple projects like water heater replacements or furnace changes may qualify for express permits. More complex renovations require plan review, typically taking 3–6 weeks. In critical areas (wetlands, streams, steep slopes), even interior renovations that increase the building footprint or value beyond 50% may trigger additional environmental review. Renovations in flood zones must comply with FEMA standards and King County's flood hazard regulations.
Working without a required permit violates King County building code. Penalties include stop-work orders, retroactive permit requirements (potentially with increased fees), and orders to open completed work for inspection. Unpermitted work can affect property sales, insurance, and financing.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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 renovation permits rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.