Overview
Seattle sign permits are issued by the Department of Construction and Inspections (SDCI). Seattle's land use code is among the most complex in the U.S., with dozens of zone types and numerous overlay districts. The city has a tiered permit review process based on sign size and complexity.
Seattle prohibits most new outdoor advertising signs and has strict rules for signs in Pedestrian (P) designated zones, which require signs to be at pedestrian scale. Pike Place Market, Pioneer Square Historic District, and International District all have separate design review processes. Seattle also has one of the highest base permit fees in the country.
What Requires a Permit in Seattle
- All permanent wall-mounted signs (illuminated and non-illuminated)
- All freestanding signs — monument, pole, pylon
- All illuminated signs of any size or type
- Window signs exceeding the local coverage threshold
- Temporary banners displayed longer than 14–30 days
- Digital / electronic message center signs
- Projecting, blade, and awning signs
Application Checklist
- ✓Completed permit application (via Seattle Services Portal)
- ✓Site plan showing property boundary and sign location
- ✓Sign drawings — front elevation with exact dimensions and materials
- ✓Photograph of existing building face where sign will be installed
- ✓Landlord / property owner authorization letter (if tenant)
- ✓Electrical drawings + licensed electrician license # (illuminated signs)
- ✓Structural engineering drawings with PE stamp (freestanding signs)
- ✓Landmark / historic district approval (if applicable)
- ✓Encroachment permit (projecting signs over public property)
- ✓Permit fee payment
Typical Seattle Sign Permit Fees
| Sign Type | Estimated Fee | Notes |
|---|---|---|
| Wall sign (non-illuminated) | $120–$300 | High base fees |
| Wall sign (illuminated) | $165–$420 | Electrical permit separate |
| Monument / ground sign | $150–$450 | Engineering required |
| Projecting / blade sign | $130–$380 | Encroachment permit also needed |
| Temporary banner | $65–$120 | Per permit |
| Electrical permit | $110–$350 | Separate from sign permit |
Fees are estimates based on current Seattle schedules. Verify at seattle.gov/sdci before submitting.
Review Timeline
| Sign Type | Typical Review Time |
|---|---|
| Standard wall sign | 2–4 weeks |
| Illuminated sign | 3–5 weeks |
| Landmark / historic district | 6–12 weeks |
| Pike Place / Pioneer Square | 6–10 weeks (additional review boards) |
Contact Information
| Contact | Details |
|---|---|
| Department | Seattle Dept. of Construction & Inspections (SDCI) |
| Online portal | seattle.gov/sdci |
| Phone | (206) 684-8850 |
| Hours | Mon–Fri 8:00am–4:00pm |
Applying for a Seattle sign permit?
Download our universal checklist and timeline planner before you submit.
Download Checklist → Timeline Planner →Disclaimer: This guide reflects Seattle, WA permit procedures as of 2024–2025. Verify current requirements at seattle.gov/sdci before submitting your application.