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Unit pricing

Seattle window replacement pricing per window installed

Window Replacement cost per window installed in Seattle, Washington in 2026.

Low

$575

Average

$1,100

High

$1,900

Seattle crews quote about $575 – $3,200 per window installed.

Multiply local unit rates by your real measurements.

What drives window replacement prices in Seattle

Local labor, permitting and climate move Seattle prices away from the national average.

Labor market

Seattle trade labor is among the most expensive in the country and books months ahead.

Permits

SDCI permits and inspections are required for most exterior and structural work.

Climate

Persistent rain demands drainage detailing, flashing and rot-resistant materials.

Seattle unit pricing by material

Vinyl$575 – $1,550
Composite$830 – $1,900
Aluminum$640 – $1,800
Wood$1,000 – $2,800
Wood with aluminum cladding$1,200 – $3,350
Fiberglass$1,150 – $3,050

Ways to lower your Seattle price

  • Do the whole house at once — per-window labor drops sharply after the first few openings.
  • Choose insert installs when the existing frames are sound; that alone saves 25–35%.
  • Claim the 25C federal tax credit: 30% of cost, up to $600 per year for qualifying ENERGY STAR windows.
  • Standard sizes and stock colors cost far less than custom shapes or dark exterior finishes.
  • Buy in winter — window companies discount hardest in their slow season.

Seattle questions

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