Window Replacement Cost in Seattle (2026)
Average cost in Seattle
US$5,735 — US$23,555
US$350 — US$2,750 per sq ft
Cost Breakdown
ItemizedWindow units, frames, and glass packages
70%
Professional installation and site prep
25%
City of Seattle building permits
3%
Removal of old windows and debris
2%
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 Cost
InteractiveEstimated Cost
US$4,640 — US$6,960
Based on 8 sources and market data for Seattle. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
US$13,445
Today
US$14,453
Window Replacement in Seattle is ↑ 7.5% compared to roughly a year ago — about US$1,008 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
280 reviews
Lake Washington Windows and Doors
4500 9th Ave NE Suite 300, Seattle, WA 98105, USA
268 reviews
Emerald City Energy Windows & Doors
3225 S 116th St # 117, Tukwila, WA 98168, USA
314 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
In 2026, the City of Seattle does not require a permit for 'like-for-like' replacements using existing openings. However, if you are changing the window size or style, a permit is required, typically costing around $924 for an $8,000 project valuation.
Vinyl window replacements in the Seattle market currently offer an 81.6% ROI, while wood window replacements provide approximately 69.8% ROI, significantly boosting home resale value.
Labor rates in Seattle are approximately 46% higher than the national average due to the high cost of living and specialized requirements for energy-efficient installations in the Pacific Northwest climate.
Upgrading to ENERGY STAR-rated windows in Seattle can save homeowners an average of $366 per year in heating and cooling costs, especially when replacing single-pane glass.
📊Our Methodology
How we collect dataAggregated from 8+ 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: 4 days 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.