Built-in outdoor kitchens in Tacoma require building permits from Planning and Development Services (PDS) when they include new electrical, plumbing, gas piping, or a structural roof, under Tacoma Municipal Code Title 2.02 (which adopts the 2018 International Residential Code). Detached accessory structures under 200 sq ft and not connected to utilities may qualify as exempt from a building permit but still require zoning clearance.
TMC Title 2.02 adopts the 2018 IRC. IRC Section R105.2 exempts one-story detached accessory structures used as tool and storage sheds not exceeding 200 sq ft and not connected to utilities from a building permit, but any work involving new gas piping, plumbing, electrical, or a structural roof requires permits regardless of size. Tacoma applies the Washington-amended International Mechanical Code and the Uniform Plumbing Code through Title 2.02 β gas piping work requires a mechanical/plumbing permit and pressure testing per UPC and IFGC standards. Outdoor electrical work requires a Washington State Department of Labor & Industries electrical permit (Tacoma is in the state L&I jurisdiction for electrical permits, not city-issued). Zoning standards for accessory structures are in TMC 13.06: detached accessory structures are capped at 15 feet in height, must observe 5-foot side setbacks and rear setbacks under the underlying zone (typically 15 ft, 0 ft from an alley), and the total combined size of detached accessory structures cannot exceed the smallest of 85% of the main house's footprint, 15% of the parcel area, or 1,000 square feet. Permits are issued through the Tacoma ePlans portal and reviewed by PDS at 747 Market Street.
Constructing an outdoor kitchen with gas, plumbing, electrical, or a roof without a permit triggers a PDS Notice of Violation under TMC 2.02 and 13.06, a stop-work order, and double permit fees on legalization. Unpermitted gas piping requires pressure testing or removal. Confirm specific penalty amounts with Planning and Development Services at 253-591-5030.
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