Built-in outdoor kitchens in Seattle require building permits from SDCI when they include new electrical, plumbing, gas piping, or a structural roof under Seattle Building Code (SMC Title 22) and Seattle Mechanical Code Chapter 5. Detached outdoor structures under 200 sq ft and not connected to utilities may qualify for a subject-to-field-inspection (STFI) permit.
Seattle Building Code Section 105 requires a building permit for any structural work, electrical (SEC 88.108), plumbing (Seattle Plumbing Code 106), or gas-piping work (Seattle Fuel Gas Code 106). A counter-only BBQ island with no gas service may qualify as a non-permit yard improvement, but adding a gas line, sink, refrigerator outlet, or roof triggers permits. STFI permits under SDCI Tip 303 are available for accessory structures under 200 sq ft, single-story, and not requiring utility connections β fees are about $300-$600. Larger projects use a standard residential permit with plan review. Gas lines must be installed by a licensed gas-piping contractor and pressure-tested per Seattle Fuel Gas Code 406. Lot coverage limits in SMC 23.44.014 apply (35% on lots 5,000 sq ft+). Accessory structures cannot occupy required setbacks (5 ft sides / 25 ft rear by default in NR zones).
Unpermitted construction triggers an SDCI Notice of Violation under SMC 23.90 with double permit fees, daily civil penalties of $150-$500, and orders to obtain permits or remove the structure. Unpermitted gas lines must be tested or removed; PSE/SCL may decline service. Records of NOVs appear in subsequent real-estate transactions.
Seattle, WA
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Seattle, WA
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Seattle, WA
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Seattle, WA
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Seattle, WA
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Seattle, WA
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See how Seattle's outdoor kitchen permits rules stack up against other locations.
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