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.
Federal Way, WA
Federal Way permits construction under WAC 173-60.050 exemptions between 7 AM and 10 PM. Sunday work near homes is typically restricted. Work outside the win...
Federal Way, WA
Federal Way prohibits dogs that bark or howl continuously and disturb neighbors under FWRC Title 9. Typical threshold is 20 minutes of continuous noise. Comp...
Federal Way, WA
Outdoor music events in Federal Way need a special event permit on public property or when amplified beyond neighborhood levels. Receiving limits at residenc...
Federal Way, WA
Federal Way limits on-street RV and boat trailer parking to 72 hours. In residential zones, RVs on private property must be parked on a paved or gravel surfa...
Federal Way, WA
Federal Way follows Washington State Building Code EV-ready requirements for new multifamily and commercial buildings. Public chargers exist at the Transit C...
Federal Way, WA
Under RCW 46.55, Federal Way police can tag and tow a vehicle left on a public street for more than 72 hours. On private property, owners follow state impoun...
Side-by-side rule comparisons with other cities in King County.
See how Federal Way's fire sprinkler requirements rules stack up against other locations.
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