Window Replacement Cost in Seattle (2026)
Average cost in Seattle
US$5,735 — US$23,555
US$750 — US$1,300 per sq ft
Cost Breakdown
ItemizedEnergy-efficient vinyl or fiberglass units
55%
Professional installation and sealing
35%
City of Seattle SDCI fees
4%
Removal of old units and debris
3%
Structural repairs or frame adjustments
3%
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 9 sources and market data for Seattle. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
US$13,765
Today
US$14,453
Window Replacement in Seattle is ↑ 5.0% compared to roughly a year ago — about US$688 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
286 reviews
Emerald City Energy Windows & Doors
3225 S 116th St # 117, Tukwila, WA 98168, USA
322 reviews
Sound View Window & Door Inc
13555 NE Bel Red Rd Suite 207, Bellevue, WA 98005, USA
109 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 Seattle, a permit is generally not required for 'like-for-like' replacements where the opening size remains the same. However, if you are enlarging an opening or creating a new one, a building permit is required, which typically costs between $250 and $924 depending on project valuation.
According to 2025-2026 Cost vs. Value data, vinyl window replacements in Seattle offer an average ROI of 81.6%, while wood windows recoup approximately 69.8% of their cost at resale.
A median Seattle home of approximately 1,890 square feet typically contains between 15 and 20 windows. Most contractors provide volume discounts for projects exceeding 10 units.
Seattle labor rates for skilled trades are approximately 46% higher than the national average. Homeowners should expect to pay between $150 and $450 per window in labor alone, driven by high demand and strict local energy code compliance.
📊Our Methodology
How we collect dataAggregated from 9+ 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.