Basic
$24 – $31 per sq ft
Irregular flagstone about 1-1/2 in. thick dry-laid on 4 in. compacted gravel and sand, wider joints filled with stone dust
How Much Does Flagstone Patio Cost in Seattle, Washington?
Flagstone Patio: national installed price range, materials and labor breakdown, and local pricing by ZIP code.
Flagstone Patio in Seattle, Washington typically costs $29 to $37 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Flagstone Patio in Seattle, Washington
$29 – $37
per sq ftPrices in Seattle are 19.0% higher than the national average for flagstone patio.
National average: $25 – $32 per sq ft
What you get at each price level
Standard
$28 – $37 per sq ft
Irregular flagstone about 1-1/2 in. thick fitted with tighter joints on 4 in. compacted gravel and sand, polymeric sand joints, edges set firm
Premium
$36 – $46 per sq ft
Selected flagstone about 1-1/2 in. thick cut to fit with narrow joints on 4 in. compacted gravel and sand, polymeric sand joints and a cut border
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $12 – $15 | sq ft |
| Labor | labor | $12 – $15 | sq ft |
| Supplies & Other | supplies | $3.11 – $4 | sq ft |
| Equipment & Disposal | equipment | $2.07 – $2.66 | sq ft |
Prices adjusted for Seattle local market conditions.
Flagstone Patio photo examples
Flagstone patio with a built-in stone seat wall and patio table in a backyard
Photo: Field Outdoor Spaces · CC BY 2.0 · Source
Find a pro to do thisIrregular bluestone flagstone patio entry in front of French doors
Photo: Shelterpro · CC BY-SA 4.0 · Source
Find a pro to do thisFlagstone patio edged with creeping thyme and a perennial border beside a fence
Photo: patrick_standish · CC BY 2.0 · Source
Find a pro to do thisClose-up of red flagstone slabs with blue flowering groundcover in the joints
Photo: patrick_standish · CC BY 2.0 · Source
Find a pro to do this
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($11.20-$14.43 per square foot)
- Labor ($8.71-$11.22 per square foot)
- Supplies & Other ($24.89-$32.06 per square foot)
- Equipment & Disposal ($24.89-$32.06 per square foot)
Local Price Adjustments
Material costs4.0% above avg
Labor costs34.0% above avg
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Frequently Asked Questions
How we price this
BuildX Pro researches and reviews the national price range for Flagstone Patio, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Sep 2026.
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
Get Free Estimates in Seattle
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