Do you need a permit to replace a roof in Seattle?
It depends on the project. Seattle exempts some roof replacements from a building permit and requires one for the rest1.
On this page
Depends on size or scope
Seattle's rule“A permit is not required for re-roof work at one- and two-family homes and townhouses if no changes are made to the building envelope other than adding or replacing insulation, and the insulation value is equivalent to or better than the existing structure.”1
City of Seattle, Seattle Department of Construction & Inspections, What is it?
Which permits you need
| Permit | Required when | The city’s wording |
|---|---|---|
| Building permit | Re-roof alters the building envelope beyond adding/replacing insulation | You need a construction permit if your re-roofing work alters the building envelope in any way other than adding or replacing insulation at one- and two-family homes and townhouses.1 |
| Building permit | Structural changes or replacement of sheathing of any size | Permits are required for structural changes and replacement of sheathing of any size.2 |
| Roofing permit | Commercial and multifamily: replacing roof cover, sheathing, or insulation | You need a re-roofing permit if you are replacing the roof cover, sheathing, or insulation on commercial or multifamily projects.1 |
Limits and conditions in Seattle's rule
Each limit sits next to the sentence it comes from; the conditions in that sentence are part of the rule.
| Rule | Value | The city’s wording |
|---|---|---|
| Like-for-like replacement exempt? | Yes, with conditions | Roof replacement if no changes are made to the building envelope other than adding or replacing insulation, and the work is equivalent to or better than the existing structure.2 |
| Roof recover exempt? | Yes | Roof recover.2 |
| Sheathing replacement: permit required? | Yes | Permits are required for structural changes and replacement of sheathing of any size.2 |
Roof permit fees in Seattle
Fee lines as Seattle's schedule states them. A minimum or base fee is not the whole price when the line says the fee grows with project value.
| Fee | As the schedule states it |
|---|---|
| Commercial Re-Roofing Permit (commercial/multifamily only) | Base fee x .53 |
| Re-roof permit flat fee (commercial/multifamily) | Half the base fee plus state surcharge1 |
All of Seattle's fee lines are on the Seattle permit page.
Inspections
- No on-site inspection for re-roof permits; close with Roof Replacement Affidavit1
Review time
Same day (re-roof permits applied for online)1. This is the department's published figure, not a guarantee.
Who to ask
Seattle Department of Construction & Inspections (SDCI)4
Building permits
- Website
- seattle.gov4
- Apply online
- services.seattle.gov5
- Phone
- (206) 684-86004
- Address
- 700 5th Ave, Suite 2000, Seattle, WA 98104 (mailing: P.O. Box 34019, Seattle, WA 98124-4019)4
- Hours
- Most staff 8 AM - 4 PM (phone or email)6
- Inspections
- Online, or 24-hour line (206) 684-89007
Roof permit rules in other cities
Rules differ from city to city. Compare Seattle with 19 other cities on the national roof replacement permit guide, or go straight to one:
- New York City, NY
- Los Angeles, CA
- Chicago, IL
- Houston, TX
- Phoenix, AZ
- San Antonio, TX
- San Diego, CA
- Dallas, TX
- Jacksonville, FL
- Fort Worth, TX
- San Jose, CA
- Charlotte, NC
- Columbus, OH
- Indianapolis, IN
- San Francisco, CA
- Denver, CO
- Oklahoma City, OK
- Philadelphia, PA
- Austin, TX
Sources
- Re-Roof Permit - Construction and InspectionsCity of Seattle, Seattle Department of Construction & InspectionsChecked November 7, 2026
- 2021 Seattle Residential Code, Chapter 1 AdministrationCity of Seattle, Seattle Department of Construction & InspectionsChecked November 7, 2026
- 2026 Fee Subtitle and related documents (SMC Chapter 22.900)City of Seattle, Seattle Department of Construction & InspectionsEffective January 1, 2026Checked November 7, 2026
- Fences - Construction and InspectionsCity of Seattle, Seattle Department of Construction & InspectionsChecked November 7, 2026
- How Do You Get a Permit? - Construction and InspectionsCity of Seattle, Seattle Department of Construction & InspectionsChecked November 7, 2026
- Contact Us - Hours & LocationCity of Seattle, Seattle Department of Construction & InspectionsChecked November 6, 2026
- Construction Inspections - Construction and InspectionsCity of Seattle, Seattle Department of Construction & InspectionsChecked November 7, 2026