Shed Installation Permits in Kent

Local Rule

City of Kent Economic and Community Development Department; Washington State Building Code, local exemption amendment (WAC 51-16-080)

Kent generally does not require a building permit for a detached shed under 200 square feet, using the higher local exemption threshold that Washington law allows cities to adopt above the state's 120-square-foot minimum. A shed over 200 square feet generally requires a permit, and even a smaller shed must comply with zoning setback requirements. Kent's single-family zones typically require accessory structures to maintain reduced setbacks compared to the primary structure. Sheds located in or near a critical area, such as a wetland or floodplain, may need additional review regardless of size.

Source · Verified September 2026

Kent Building Department

Hours and procedures can change — call ahead to confirm.

How This Compares to King County

Kent's own rule is shown above (No permit under 200 sqft). Here is the separate rule that applies at the county level, for context:

King County / local code

Washington requires a building permit for a shed over 120 square feet, or any shed taller than one story, attached to the house, or wired for electricity or plumbing. In King County a shed of 120 square feet or less is generally exempt from the building permit but still must meet zoning setbacks (commonly 5 feet from property lines).

See the full county page

Nearby Cities with Verified Rules

Other cities near Kent with a confirmed shed installation rule:

FAQs

Building It Yourself? Here's What You'll Need

Popular tools and materials homeowners use for a shed installation project:

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