Roof Replacement Cost in Seattle 2026
Roof Replacement in Seattle costs between $11,300 and $36,725 in 2026, with the average around $19,775. Seattle pricing runs 41% above the US national average. Full tear-off of the existing roof and installation of a new system with asphalt shingles, underlayment, drip edge, and new flashing. Includes ridge vents and disposal of old materials.
What roof replacement includes in Seattle
Full tear-off of the existing roof and installation of a new system with asphalt shingles, underlayment, drip edge, and new flashing. Includes ridge vents and disposal of old materials.
Typical time on site: 2 to 4 days. Local labor rate: $33/hour for an experienced roofing pro.
What changes the price of roof replacement in Seattle
- Roof size in squares
- Roof pitch and number of stories
- Tear-off of old layers
- Shingle grade and material
- Deck repairs and permits
A roof replacement quote priced off statewide averages will be off by 10 to 20 percent for Seattle, because the metro has its own labor pool, material delivery distances, and permit timelines.
Seattle climate and demand for roofing
Mild winters with persistent rain (moss/moisture on roofs); rare snow loads; minimal AC historically but warming trend
Seattle permits for roof replacement
Building department: Seattle Department of Construction and Inspections (SDCI). https://www.seattle.gov/sdci
Typical permit cost: $400 - $5,000 residential. Inspection time: 10-25 business days; plan check 6-12 weeks. Seattle rule: Seattle SDCI has strict energy code (Stretch Code). Tree ordinance affects site work. ADU streamlined permitting. WA L&I license required for all contractors.
Washington sales tax and licensing for Roofing
Washington sales tax: 6.5% + local (~9.3% combined avg) + 0.471% B&O. WASHINGTON TAXES CONTRACTOR LABOR. Retail Sales Tax applies to total construction contract (labor + materials) on speculative builders. Custom construction taxed differently.
State license: Washington Department of Labor and Industries (L&I), required: $117 (initial) + $12K bond + insurance.
Get accurate Roof Replacement quotes in Seattle with KaamCam
KaamCam helps Seattle roofing pros send branded estimates by text, take deposits online, and schedule jobs from one app. The estimate templates auto-fill Washington sales tax and Seattle permit fee lines. $12 per user per month. Start a 7-day free trial.