King County, WA Parking Rules: EV Charging (2026)

Installing an electric vehicle charging station in unincorporated King County is generally straightforward for residential properties. A Level 1 charger (standard 120-volt outlet) typically does not require a permit. A Level 2 charger (240-volt circuit) requires an electrical permit from the Washington State Department of Labor and Industries, which inspects electrical work in most of unincorporated King County. Permanently installed Level 3 (DC fast) chargers at commercial sites require electrical and building permits through the King County Department of Local Services, Permitting Division, and must comply with the Washington State Energy Code (WSEC) and National Electrical Code. Washington State law (RCW 64.38.055 and RCW 64.34.440) also protects condominium and HOA residents rights to install EV charging equipment in their assigned parking spaces, with reasonable HOA-imposed conditions allowed. At multifamily residential and commercial new construction, WSEC requires a percentage of parking spaces to be EV-ready or EV-capable. King County has no local ordinance reserving on-street parking for EV-only use in unincorporated areas, though private parking lots may post EV charging-only signs backed by the owner. ICE (internal combustion engine) vehicles blocking an active EV charger at a private site can be towed under RCW 46.55 if the lot is properly posted.