Outdoor Kitchen Permits: Kent vs Seattle
How do outdoor kitchen permits rules compare between Kent, WA and Seattle, WA?
Kent and Seattle have similar restriction levels.
Kent, WA
King County
Kent requires building, plumbing, gas, and electrical permits for permanent outdoor kitchens involving utility connections or structural work. Pre-fabricated freestanding grills with no utility lines and no roof structure typically do not require a permit. The 2021 I-Codes (WAC 51-50 and 51-51) apply effective March 15, 2024, and electrical permits are issued separately by Washington L&I.
View full Kent rules →Seattle, WA
King County
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.
View full Seattle rules →Key Facts Comparison
| Fact | Kent | Seattle |
|---|---|---|
| Code Authority | KCC Titles 14 & 15 | - |
| Adopted Codes | 2021 I-Codes (since 3/15/2024) | - |
| Freestanding Grill | Usually no permit | - |
| Gas/Plumbing/Cover | Permits required | - |
| Electrical Permit | WA L&I (not city) | - |
| Filing | MyBuildingPermit.com | - |
| Permit Trigger | - | Gas, plumbing, electrical, roof |
| STFI Threshold | - | Under 200 sq ft, no utilities |
| Side Setback | - | 5 ft typical (NR zone) |
| Lot Coverage | - | 35% max (NR zone) |
| Code Section | - | SBC 105; SMC 23.44.014 |
Highlighted rows indicate differences between cities.
Kent FAQ
Do I need a permit for my Kent outdoor kitchen?
Only if it involves utility connections (gas, water, sewer, dedicated electrical) or a roof or canopy structure. A pre-fabricated movable grill on a patio with no plumbed lines does not need a permit. As soon as you tap gas or water, separate plumbing and gas permits are required through MyBuildingPermit.com plus an L&I electrical permit.
Which codes apply to a permanent outdoor kitchen in Kent?
The 2021 I-Codes as adopted by the Washington State Building Code (WAC 51-50 and 51-51) and as amended by KCC Title 14. Fire-clearance provisions in KCC Title 13 apply to combustibles near burners. Setbacks follow the underlying zoning district under KCC Title 15. Electrical work is permitted by Washington L&I, not the city.
Seattle FAQ
Do I need a permit for a built-in outdoor kitchen in Seattle?
Yes if it has any gas line, plumbing, electrical, or roof. SDCI requires a building permit under SBC 105. Counter-only assemblies with no utility connections may not need one.
How close to the property line can my outdoor kitchen be?
Default setbacks in Neighborhood Residential zones are 5 ft sides and 25 ft rear under SMC 23.44.014. Outdoor kitchens count as accessory structures and cannot encroach into required setbacks.
Can I do my own gas line for my outdoor kitchen?
Gas piping work requires a licensed gas-piping contractor and a Seattle Fuel Gas Code permit. The line must be pressure-tested under SFGC 406 before commissioning.
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