Window Replacement Cost in Seattle (2026)
Average cost in Seattle
$5,735 – $55,000
$750 – $3,500 per sq ft
In Seattle, the average is $19,351 and most projects cost between $5,735 and $55,000, or about $750 – $3,500 per sq ft. Prices are before tax and based on 9 sources.
Cost Breakdown
ItemizedEnergy-efficient frames and glass
45%
Professional installation and sealing
42%
Seattle combined rate of 10.35%
10%
Building and structural fees
2%
Removal of old units and debris
1%
Sales Tax at 6.5%
📋What's Included
ScopeTypically Includes
- Standard vinyl double-hung windows
- Removal of old windows
- Installation & insulation
- Interior trim
- Cleanup
Typically Excludes
- Custom or specialty shapes
- Triple-pane or premium glass
- Exterior trim or cladding
- Structural modifications
- Bay or bow windows
Based on replacing 10 standard-size windows with vinyl double-hung.
🧮Estimate your project
LiveYour estimate in Seattle
Likely range $8,708 – $42,572
- Materials45%$8,708
- Labor42%$8,127
- Sales Tax10%$1,935
- Permits2%$387
- Disposal1%$194
Vinyl
$19,351
Fiberglass
$26,653
Wood
$33,955
Aluminum-clad Wood
$41,258
Calibrated to 9 researched sources for Seattle. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$18,085
Today
$19,351
Window Replacement in Seattle is ↑ 7.0% compared to roughly a year ago — about $1,266 more on the average project.
Comparison derived from the year-over-year change rate, not a month-by-month price index. We don't store historical snapshots yet — when we do, this will become a real time series.
🏢Top Window Replace Contractors in Seattle
Verified providersEinar Johanson Window & Door
922 N 128th St, Seattle, WA 98133, USA
311 reviews
Lake Washington Windows and Doors
4500 9th Ave NE Ste 300, Seattle, WA 98105, USA
321 reviews
Sound View Window & Door Inc
13555 NE Bel Red Rd Ste 207, Bellevue, WA 98005, USA
110 reviews
Provider data sourced from public business directories. Ratings and reviews are public and may change. LookupCost is not affiliated with listed providers.
💬What People Actually Paid
Community❓Common Questions
No permit is required for 'like-for-like' replacements in existing openings. However, if you are changing the window size, style, or creating new openings, a building permit is required, typically costing around $924.
Seattle costs are roughly 46% higher due to elevated local labor rates, strict energy-efficiency codes (Washington State Energy Code), and the specialized moisture-proofing and flashing required for the Pacific Northwest climate.
Homeowners in the Seattle metro area typically recoup 70% to 76% of their investment in home value, particularly when upgrading to high-performance vinyl or fiberglass units that lower energy bills by 7% to 15%.
The median Seattle home (approx. 1,890 sq ft) typically contains 15 to 20 windows. A full-home replacement for this size usually ranges from $18,000 to $49,900 depending on the material choice.
📊Our Methodology
How we collect dataAggregated from 5+ verified web sources and cost databases
Licensed contractor estimates and regional cost guides
Government construction and labor statistics
Community-reported project costs and reviews
Last data collection: 1 months ago. Updates run weekly. All costs in USD.
About this data
Cost figures are estimates synthesized from public market data using AI research and refreshed regularly. Real project costs vary by scope, materials, contractor, and site conditions. Always get verified quotes from licensed contractors for your specific project.
Spotted bad data? Let us know — we'll review and update.