Basic
$2.92 – $9.73 per sq ft
19/32 in. tongue-and-groove OSB panels on 16 in. joists, glued and nailed to the code schedule, end joints staggered
How Much Does Install Subfloor Cost in Seattle, Washington?
Subfloor panels supplied and installed over joists (plywood/OSB/panel, fastening, labor); excludes joist repair, mold remediation and finished flooring.
Install Subfloor in Seattle, Washington typically costs $3.44 to $11 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Install Subfloor in Seattle, Washington
$3.44 – $11
per sq ftPrices in Seattle are 19.0% higher than the national average for install subfloor.
National average: $3 – $10 per sq ft
What you get at each price level
Standard
$3.44 – $11 per sq ft
23/32 in. tongue-and-groove OSB panels, subfloor adhesive on every joist, ring-shank nails, staggered end joints
Premium
$4.29 – $14 per sq ft
23/32 in. tongue-and-groove moisture-resistant panels, adhesive on joists, screwed at close spacing, seams sanded flat
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1.40 – $4.68 | sq ft |
| Labor | labor | $1.41 – $4.69 | sq ft |
| Supplies & Other | supplies | $0.37 – $1.25 | sq ft |
| Equipment & Disposal | equipment | $0.25 – $0.83 | sq ft |
Prices adjusted for Seattle local market conditions.
Install Subfloor photo examples
I-joist floor framing topped with plywood subfloor on a house addition
Photo: NLT CONSTRUCTION · CC BY 2.0 · Source
Find a pro to do thisLeveled subfloor with a new bathtub set in a gutted bathroom
Photo: Charles & Clint · CC BY 2.0 · Source
Find a pro to do this
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($1.35-$4.50 per square foot)
- Labor ($1.05-$3.50 per square foot)
- Supplies & Other ($0.36-$1.20 per square foot)
- Equipment & Disposal ($0.24-$0.80 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 Install Subfloor, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Nov 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
Connect with local install subfloor contractors in Seattle for personalized quotes based on your specific project.