Top Window Replacement Companies in Seattle
Window Replacement Cost in Seattle
Local ranges, adjusted for area wage and cost-of-living data.
| Service | Typical range in Seattle |
|---|---|
| Replacement window, installed | $631–$1,513/window |
| Wood or fiberglass window, installed | $1,009–$2,018/window |
| Whole-house replacement (10-15 windows) | $6,305–$18,915/job |
Window Replacement prices in Seattle run about 26% above the national average, based on what this trade earns in the metro area — so neighbouring cities in the same metro see similar rates.
Quotes on this page come from 4 companies serving Seattle, rated 4.5★ on average across 599 customer reviews.
Seattle Climate & Seasonal Timing
What Seattle's weather means for scheduling window replacement.
- Last spring frost
- March 5
- First fall frost
- November 24
- Annual precipitation
- 37.72"
- Heating degree days
- 4,370
- Cooling degree days
- 188
| Month | Low | High | Precip |
|---|---|---|---|
| Jan | 37.3° | 48.6° | 5.47" |
| Feb | 37.1° | 51.4° | 3.52" |
| Mar | 39.7° | 55.4° | 3.85" |
| Apr | 42.9° | 59.9° | 2.79" |
| May | 48.8° | 65.8° | 2.01" |
| Jun | 53.3° | 70.7° | 1.57" |
| Jul | 56.5° | 75.8° | 0.85" |
| Aug | 57° | 76.2° | 0.94" |
| Sep | 53.1° | 70.8° | 1.3" |
| Oct | 46.8° | 60.7° | 3.38" |
| Nov | 40.6° | 52.4° | 5.98" |
| Dec | 36° | 46.9° | 6.06" |
NOAA station data 3.2 miles from Seattle.
Permits & Regulations in WA
- Painting and remodeling in Washington require Labor and Industries contractor registration, with no dollar-based exemption
- Specialty contractor registration requires a $6,000 surety bond and liability insurance
- Work that disturbs paint in homes built before 1978 must be done by a Lead-Safe Certified firm under the EPA Renovation, Repair and Painting Rule
License required: Washington L&I specialty contractor registration
Sources: lni.wa.gov, www.epa.gov
Window Replacement FAQs for Seattle
How much does window replacement cost in Seattle?
Replacement windows in Seattle typically run $631-$1513 per window installed, depending on frame material and glass.
How many window replacement companies serve Seattle?
We track 4 window replacement companies serving Seattle.
Is window replacement in Seattle more expensive than average?
Installation labor in Seattle runs about +26.1% versus the national average.
Do I need a permit to replace windows in Seattle, WA?
In WA, Painting and remodeling in Washington require Labor and Industries contractor registration, with no dollar-based exemption. Same-size replacements in Seattle often need no permit, but enlarging an opening does, and pre-1978 homes fall under the EPA lead-safe rule.
Do energy-efficient windows pay off in Seattle?
Seattle sees about 4,370 heating degree days and 188 cooling degree days a year, which sets how much better glass saves on heating versus cooling.
What type of glass suits windows in Seattle?
With summer highs near 76F and winter lows around 36F in Seattle, the low-E coating and frame insulation matter more than the brand.
How many quotes should I get for window replacement in Seattle?
Three is typical; with 4 window companies serving Seattle, compare the window model and installation method, not just the per-window price.
How long does window replacement take in Seattle?
A whole-house job in Seattle is usually one to three days of installation, after a lead time of several weeks for custom-sized windows.
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