Fence Permit in King County, Washington
By Mario Bailey Last verified 2026-06-17 · 2 official sources
Quick answer
In unincorporated King County fences 6 feet high or less do not require a building permit. Fences over 6 feet in height require a building permit submitted through MyBuildingPermit.com. These rules apply to unincorporated King County only; Seattle and other incorporated cities have their own permit requirements. Properties in critical area buffers may not qualify for the exemption.
Permit required?
Sometimes, depending on the project.
Typical threshold: fences 6 feet or less do not require a building permit in unincorporated King County; fences over 6 feet require a permit.
When a permit is usually needed
Before building a fence over 6 feet tall in unincorporated King County
Permit cost and what affects it
Most permit fees increased approximately 14% on January 1 2026 plus a $126 application screening fee
Permit costs generally depend on the project valuation, the scope of work, and the inspections required. Ask the office how the fee is calculated for your specific project.
Where to apply
King County Department of Local Services Permitting Division
- 919 SW Grady Way Suite 300, Renton, WA 98057
- Phone: (206) 296-6600
- Email: PermitQuestions@kingcounty.gov
Frequently asked questions
- Do you need a fence permit in King County?
- In unincorporated King County fences 6 feet high or less do not require a building permit. Fences over 6 feet in height require a building permit submitted through MyBuildingPermit.com. These rules apply to unincorporated King County only; Seattle and other incorporated cities have their own permit requirements. Properties in critical area buffers may not qualify for the exemption. The typical threshold is fences 6 feet or less do not require a building permit in unincorporated King County; fences over 6 feet require a permit. Always confirm with the office before starting.
- How much does a fence permit cost in King County?
- Most permit fees increased approximately 14% on January 1 2026 plus a $126 application screening fee Contact the office for current amounts.
- How long does a fence permit take in King County?
- Processing time for a fence permit in King County varies by workload and project scope. Contact the King County Department of Local Services Permitting Division for a current estimate.
- Where do you apply for a fence permit in King County?
- You can apply through the King County permit portal or contact the King County Department of Local Services Permitting Division directly. The links are listed on this page.
Official sources
Last verified: 2026-06-17 Report an error on this page
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