Washington's adopted International Residential Code under RCW 19.27 makes fire sprinklers mandatory in townhouses and multifamily buildings; single-family fire sprinklers are typically required only when triggered by access, water-supply, or local amendments.
King County follows the Washington State Building Code (RCW 19.27), which adopts the International Residential Code (IRC) and International Building Code (IBC) statewide. Fire sprinklers (NFPA 13D) are required in new townhouses and multifamily structures. For single-family detached homes, sprinklers are not universally required at the state level, but local fire-code amendments, long driveways, or insufficient hydrant flow can trigger them in unincorporated King County and many of the county's 39 cities. Plan review is handled by King County Department of Local Services Permitting in unincorporated areas and by city building departments elsewhere, with fire-district sign-off.
Building or remodeling without required sprinklers, or bypassing sprinkler heads, is a building- and fire-code violation under IRC, IBC, and RCW 19.27, with stop-work orders and corrections required.
Kent, WA
Kent decibel limits follow WAC 173-60 and KCC 8.05 using EDNA zones. Residential receiving limit is 55 dBA day and 45 dBA night. Commercial sources are cappe...
Kent, WA
Kent industrial sources are capped at 70 dBA day and 65 dBA night at another industrial property, but only 60 dBA day and 50 dBA night when received at a res...
Kent, WA
Commercial trucks over 10,000 pounds GVWR generally cannot park on Kent residential streets except for active loading. Warehouse districts and truck routes h...
Kent, WA
Kent follows Washington State Building Code EV-ready requirements for new multifamily and commercial buildings. Public chargers exist at Kent Station and sev...
Kent, WA
Kent driveway aprons require Public Works approval under KCC Title 6. New or widened driveways need a right-of-way construction permit, and vehicles must not...
Kent, WA
Kent has no city requirement to split shared fence costs with a neighbor. Washington common law controls boundary fences. Survey the property line before bui...
Side-by-side rule comparisons with other cities in King County.
See how Kent's fire sprinkler requirements rules stack up against other locations.
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