Basic
$24 – $54 per sq ft
Entry-level capped composite boards in a solid color, treated frame on concrete footings, treated wood railing
How Much Does Synthetic Wood Deck Cost in Seattle, Washington?
New ground-level or low deck built with composite (synthetic wood) decking on a pressure-treated frame, including footings and basic railing, per square foot of deck.
Synthetic Wood Deck in Seattle, Washington typically costs $29 to $63 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Synthetic Wood Deck in Seattle, Washington
$29 – $63
per sq ftPrices in Seattle are 19.0% higher than the national average for synthetic wood deck.
National average: $25 – $55 per sq ft
What you get at each price level
Standard
$29 – $63 per sq ft
Mid-grade capped composite in a wood-grain multi-tone, hidden fasteners, treated frame, composite railing and balusters
Premium
$36 – $79 per sq ft
Capped composite with streaked multi-tone grain, picture-frame border, hidden fasteners, composite rail with black aluminum balusters
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $12 – $26 | sq ft |
| Labor | labor | $12 – $26 | sq ft |
| Supplies & Other | supplies | $3.12 – $6.86 | sq ft |
| Equipment & Disposal | equipment | $2.08 – $4.58 | sq ft |
Prices adjusted for Seattle local market conditions.
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($11.25-$24.75 per square foot)
- Labor ($8.75-$19.25 per square foot)
- Supplies & Other ($3.00-$6.60 per square foot)
- Equipment & Disposal ($2.00-$4.40 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
References
- Composite Deck Direct: Composite deck cost 2026, compositedeckdirect.com, retrieved Nov 2026
- Ergeon: Deck cost 2026, ergeon.com, retrieved 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 synthetic wood deck contractors in Seattle for personalized quotes based on your specific project.