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Architectural shingles run about $650 to $936 per square installed in Seattle, which puts a typical 25-square roof at roughly $16,250 to $23,400. That is 30% above the Washington baseline. 2026 planning estimates, not quotes.
Roof replacement in Seattle, Washington runs roughly 30% above the Washington state baseline in 2026, driven by local labor rates, permit fees, and code requirements. A typical 25-square asphalt shingle roof here comes to about $16,300–$23,400 installed. High moss growth; zinc strips and synthetic underlayment standard. Use this guide to size a per-square budget for asphalt shingles, standing-seam metal, or concrete/clay tile on a typical Seattle home, then refine your estimate with our project estimator.
A roof replacement in Seattle, WA costs about $16,250 – $23,400 for a typical 25-square asphalt shingle roof — $650 – $936 per square installed with tear-off. Standing-seam metal runs $1,287 – $2,002 per square. These are 2026 planning figures: the Washington baseline scaled by Seattle's local factor of 1.30.
Seattle runs about 30% above the Washington state baseline, so the state figures are scaled by 1.30 to give the local ranges below.
| Material | Per square installed | 20 squares | 25 squares | 30 squares |
|---|---|---|---|---|
| Architectural asphalt shingles | $650 – $936 | $13,000 – $18,720 | $16,250 – $23,400 | $19,500 – $28,080 |
| Standing-seam metal | $1,287 – $2,002 | $25,740 – $40,040 | $32,175 – $50,050 | $38,610 – $60,060 |
| Concrete or clay tile | $1,716 – $2,574 | $34,320 – $51,480 | $42,900 – $64,350 | $51,480 – $77,220 |
Figures are per square — 100 square feet of finished roof — for installed work including tear-off, and are 2026 planning estimates rather than quoted prices. Squares shown allow for a typical 6/12 pitch and 10% waste. Always get three written quotes before committing.
| Roof size | Squares | Asphalt shingle range |
|---|---|---|
| 1,200 sq ft footprint | 15 | $9,750 – $14,040 |
| 1,500 sq ft footprint | 18 | $11,700 – $16,848 |
| 2,000 sq ft footprint | 25 | $16,250 – $23,400 |
| 2,500 sq ft footprint | 31 | $20,150 – $29,016 |
| 3,000 sq ft footprint | 37 | $24,050 – $34,632 |
The Washington state permit average is around $320; large metros frequently sit above that and may add inspection or scaffolding requirements of their own.
| House size | One storey | Two storeys |
|---|---|---|
| 1,000 sq ft house | 12 sq · $7,800 – $11,232 | 6 sq · $3,900 – $5,616 |
| 1,300 sq ft house | 16 sq · $10,400 – $14,976 | 8 sq · $5,200 – $7,488 |
| 1,500 sq ft house | 18 sq · $11,700 – $16,848 | 9 sq · $5,850 – $8,424 |
| 1,800 sq ft house | 22 sq · $14,300 – $20,592 | 11 sq · $7,150 – $10,296 |
| 2,000 sq ft house | 25 sq · $16,250 – $23,400 | 12 sq · $7,800 – $11,232 |
| 2,500 sq ft house | 31 sq · $20,150 – $29,016 | 15 sq · $9,750 – $14,040 |
| 3,000 sq ft house | 37 sq · $24,050 – $34,632 | 18 sq · $11,700 – $16,848 |
Flat and low-slope roofs are priced differently from shingles: they use membranes (TPO, EPDM, modified bitumen) or spray foam with a protective coating, and are usually quoted per square foot of roof area. If your Seattle home has a flat roof, size it with the flat roof calculator and ask roofers to quote the membrane or foam system, its thickness and the coating warranty separately.
| Measure | Index |
|---|---|
| All items | 111.1 |
| Goods | 104.0 |
| Housing | 151.3 |
The U.S. Bureau of Economic Analysis puts prices for goods in the Seattle-Tacoma-Bellevue, WA metro area at 104.0 in 2024, 4% above the national level and level with Washington as a whole (104.4). Shingles, underlayment, flashing and fasteners track the goods index, so that is roughly how far the material half of a Seattle bid sits from the state figure. Housing costs (151.3) feed into what local crews have to earn, which is why labor, not material, explains most of the gap between a big metro and the rest of its state.
Source: BEA Regional Price Parities by metropolitan area, 2024 (updated Feb 2026), metro 42660.
Codes are adopted and amended locally, so check your local building department before you sign. Sources: ICC International Residential Code 2021, Chapter 9 (R905.1.2 ice barrier, R908.3.1.1 recover limits).
Budget about $200–$500 for the permit in Seattle (our planning average is about $320). Fees are set by each city or county — some charge a flat fee, others a share of the job value — so check your local building department; the contractor normally pulls the permit and passes the fee through.
How Seattle compares with the rest of the country, for 14 materials: roof cost per square foot.
Getting quotes from crews that also work the next metro over? The same 25-square shingle roof is estimated at Spokane, WA (about $13,750 – $19,800 for 25 squares), Tacoma, WA (about $15,000 – $21,600 for 25 squares), Portland, OR (about $14,100 – $20,400 for 25 squares), Boise, ID (about $9,975 – $14,250 for 25 squares), Anchorage, AK (about $18,125 – $26,100 for 25 squares). Each figure is that city's own multiplier on its state baseline.
A typical 25-square asphalt shingle roof in Seattle works out at roughly $16,250 – $23,400 installed. That is the Washington baseline scaled by the local factor of 1.30.
A one-storey 1,500 sq ft house has about 18 squares of roof at a 6/12 pitch with 10% waste, so roughly $11,700 – $16,848 for architectural shingles in Seattle. A two-storey house of the same floor area has about half the roof.
High moss growth; zinc strips and synthetic underlayment standard. Metro labour rates, permit and inspection requirements, and disposal fees all differ from the state average, which is what the 1.30 multiplier represents.
Measure your roof in squares, then get three written, itemised quotes from licensed and insured local roofers on the same scope. Compare the per-square price and check each quote covers tear-off, decking, underlayment, flashing, ventilation, disposal and the permit.
In almost every jurisdiction yes, and a licensed contractor will pull it as part of the job. Budget roughly $200–$500 for the fee, but check with the Seattle building department, which sets it. Replacing a roof without one can cause problems at resale and can give an insurer grounds to dispute a later claim.
Three, from licensed and insured local contractors, each written against the same scope. Ask specifically whether flashing, drip edge, underlayment, ridge vent and decking replacement are included, because that is where quotes usually differ.