Basic
$1.62 – $2.83 per sq ft
Borate-treated cellulose blown to about R-38 over the attic floor, eave baffles where missing, depth markers posted
How Much Does Install Blown-In Cellulose Insulation Cost in Seattle, Washington?
Install Blown-In Cellulose Insulation: national installed price range, materials and labor breakdown, and local pricing by ZIP code.
Install Blown-In Cellulose Insulation in Seattle, Washington typically costs $1.90 to $3.33 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 Blown-In Cellulose Insulation in Seattle, Washington
$1.90 – $3.33
per sq ftPrices in Seattle are 19.0% higher than the national average for install blown-in cellulose insulation.
National average: $1.66 – $2.91 per sq ft
What you get at each price level
Standard
$1.90 – $3.33 per sq ft
Borate-treated cellulose blown evenly to about R-38, eave baffles, dam around the hatch, depth markers and attic card
Premium
$2.38 – $4.17 per sq ft
Borate-treated cellulose blown to about R-38, eave baffles, hatch dam and insulated hatch cover, depth markers and certificate
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.78 – $1.36 | sq ft |
| Labor | labor | $0.78 – $1.37 | sq ft |
| Supplies & Other | supplies | $0.21 – $0.36 | sq ft |
| Equipment & Disposal | equipment | $0.14 – $0.24 | sq ft |
Prices adjusted for Seattle local market conditions.
Install Blown-In Cellulose Insulation photo examples
Installer in protective suit blowing cellulose insulation across an attic floor
Photo: USFWS Mountain Prairie · Public domain · Source
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Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($0.75-$1.31 per square foot)
- Labor ($0.58-$1.02 per square foot)
- Supplies & Other ($0.20-$0.35 per square foot)
- Equipment & Disposal ($0.13-$0.23 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 Blown-In Cellulose Insulation, 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
Connect with local install blown-in cellulose insulation contractors in Seattle for personalized quotes based on your specific project.