Shed Permit in Seattle, Washington
- Permit Required
- Unknown
- Authority
- City of Seattle
- Setback
- 10-15 feet front, five feet side (NR zones) ft
- Last Verified
- 2026-09-29
What the official source says
“All other sheds require a permit; most require only a subject-to-field-inspection permit”
seattle.gov
“The total area (or “footprint”) of the shed’s roof is 120 square feet or less.”
seattle.gov
“You usually can’t put the shed within 10-15 feet of the front property line or within five feet of the side property lines in NR zones.”
seattle.gov
Verify before you build — primary source for this page: https://www.seattle.gov/construction-and-inspections/permits/common-projects/sheds
Permit Requirements
All other sheds require a permit; most require only a subject-to-field-inspection permit
Size / Height Limits
Maximum size without a permit: 120 sq ft.
Setbacks
Minimum setback: 10-15 feet front, five feet side (NR zones) ft.
How to apply
- Confirm the rules for your address with City of Seattle — the official sources on this page are the place to start.
- Prepare a simple site plan or drawing showing where the shed work goes and its size.
- Submit the application and pay the permit fee.
- Schedule the required inspections and keep the approved permit on site.
More detail: our shed permit guide.
Building Department
City of Seattle
Official Sources
FAQ
Is there a size or height limit before a shed permit is needed in Seattle?
The verified threshold is 120 sq ft in area.
Where do I apply for a shed permit in Seattle?
Applications go to City of Seattle.