Roof Replacement Permit in King County, Washington
By Mario Bailey Last verified 2026-06-17 · 2 official sources
Quick answer
Replacement of roofing or siding on a detached one or two-family house does not require a building permit in unincorporated King County. This exemption applies to like-for-like replacement and may not apply to structural changes or re-roofing on other structure types. These rules apply to unincorporated King County only; incorporated cities such as Seattle have their own requirements.
Permit required?
No permit is typically required.
When a permit is usually needed
Replacement of roofing or siding on a detached one or two-family house in unincorporated King County does not require a building permit
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 roof replacement permit in King County?
- Replacement of roofing or siding on a detached one or two-family house does not require a building permit in unincorporated King County. This exemption applies to like-for-like replacement and may not apply to structural changes or re-roofing on other structure types. These rules apply to unincorporated King County only; incorporated cities such as Seattle have their own requirements. Always confirm with the King County Department of Local Services Permitting Division before starting.
- How much does a roof replacement 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 roof replacement permit take in King County?
- Processing time for a roof replacement 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 roof replacement 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
Compare Roof Replacement Permit requirements across Washington localities