Washington cost guide
Roof replacement cost in Washington
In Washington, roof replacement prices run above the national average — whether you're in Seattle, Spokane, or Tacoma. Here's what a complete, permitted job should cost, and how to tell whether the quote in your hand is fair.
Typical Washington range
$10,300 – $29,600
Asphalt shingle roofs commonly run $4.50–$11.00 per sq. ft. installed.
Included at this price: Tear-off, underlayment, flashing, ridge vent, disposal, and permits.
Washington prices by project type
| Project | Washington range | Unit check |
|---|---|---|
| Asphalt shingle replacement | $10,300 – $27,400 | Architectural shingles commonly run $4.50–$9.00 per sq. ft. installed. |
| Metal roof (standing seam or panel) | $20,500 – $59,300 | Standing seam commonly runs $10–$20 per sq. ft. installed. |
| Tile or slate roof | $28,500 – $91,200 | Concrete tile $10–$20 per sq. ft.; natural slate $18–$35 per sq. ft. |
| Flat or low-slope roof (TPO, EPDM, modified) | $9,100 – $31,900 | Single-ply membrane commonly runs $7–$14 per sq. ft. installed. |
| Roof repair or partial section | $600 – $5,100 | Most localized repairs land between $400 and $2,500. |
Reviewed 2026. Editorial benchmarks from public cost surveys (Zonda Media / Remodeling magazine, Houzz, Angi / HomeAdvisor), adjusted by a state construction-cost index. Not a bid, appraisal, or licensed estimating data.
What a common size costs in Washington
Asphalt shingle replacement, installed: $5–$11 per sq. ft. of roof area, adjusted for Washington construction costs.
| Size | Washington estimate |
|---|---|
| 1,500 sq. ft. | $7,700 – $18,800 |
| 2,000 sq. ft. | $10,300 – $25,100 |
| 2,500 sq. ft. | $12,800 – $31,300 |
| 3,000 sq. ft. | $15,400 – $37,600 |
Per-unit rate from the public cost guides cited above, multiplied by size and the Washington construction-cost index. Access, demolition, repairs, and permits can add to it — this is a benchmark, not a bid.
Red flags in Washington roof replacement quotes
- Whether tear-off or a layover is specified, and how many existing layers
- Decking replacement priced per sheet up front instead of decided mid-job
- Flashing: step, valley, chimney, and skylight — new vs. "reuse existing"
- Underlayment type and ice-and-water shield coverage
- Intake and exhaust ventilation
Commonly missing line items: drip edge, ridge vent or soffit intake, dumpster, disposal, and magnet sweep, permit and inspection fees, per-sheet decking allowance.
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