Roof Cost Index
Washington Roof Cost Index
Score 115 vs. national baseline 100. Modeled roofing cost ranges and market factors for Washington.
Historical Trend (Modeled)
The data model already tracks monthly, quarterly, and yearly history. The values below are modeled placeholders until contractor pricing feeds are integrated.
| Month | Index | $/sqft |
|---|---|---|
| 2025-07 | 112.97 | $5.09 |
| 2025-08 | 113.46 | $5.11 |
| 2025-09 | 113.32 | $5.1 |
| 2025-10 | 112.75 | $5.08 |
| 2025-11 | 112.15 | $5.05 |
| 2025-12 | 111.94 | $5.04 |
| 2026-01 | 112.36 | $5.06 |
| 2026-02 | 113.35 | $5.11 |
| 2026-03 | 114.57 | $5.16 |
| 2026-04 | 115.6 | $5.21 |
| 2026-05 | 116.07 | $5.23 |
| 2026-06 | 115.91 | $5.22 |
| Quarter | Index | $/sqft |
|---|---|---|
| 2025-Q3 | 113.25 | $5.1 |
| 2025-Q4 | 112.28 | $5.06 |
| 2026-Q1 | 113.43 | $5.11 |
| 2026-Q2 | 115.86 | $5.22 |
Washington Roofing Market Factors
Climate exposure — hail, hurricane wind, snow load, UV — drives material spec, code requirements, and replacement frequency.
Regional labor cost, licensing requirements, and crew availability shift installed pricing more than materials in most markets.
Asphalt, metal, and tile commodity pricing varies by region due to freight, distribution, and local manufacturer presence.
Wind/hail deductibles, ACV vs RCV policy structure, and Florida/Texas-style mitigation rules influence what homeowners actually pay out of pocket.
- Heavy rainfall
- Moss and algae growth
- Wet winters
Related Calculators
Related State Resources
Frequently Asked Questions
What is the Roof Cost Index score for Washington?
Washington's current Roof Cost Index score is 115, which is 15.0 points above the national baseline of 100.
How much does a new roof cost per square foot in Washington?
Modeled installed roofing in Washington ranges from about $4.04 per square foot for builder-grade work up to $7.5 per square foot for premium materials and complex roofs, with a mid-range estimate near $5.18.
Why are roofing prices in Washington at this level?
Heavy rain, moss, mild winters. Local labor cost, popular materials (Asphalt Shingles), and insurance practices also shape installed pricing.
Is Washington more expensive than the U.S. average?
Yes. Washington prices roughly 15.0% above the U.S. average for residential roofing.
How is the Washington Roof Cost Index calculated?
It combines the state's cost multiplier, climate exposure profile, and labor signals from our state cost guides, normalized against a national baseline of 100.
When was the Washington Roof Cost Index last updated?
The index was last refreshed on 2026-06-01. We plan quarterly methodology refreshes as more pricing inputs come online.
What's the most common roofing material in Washington?
Asphalt Shingles is the most widely installed material in Washington, driven primarily by heavy rain, moss, mild winters.
Can I get an accurate Washington roof quote from this index?
The index is a benchmark, not a quote. Use our state-specific calculators and request a free estimate for binding pricing.