How much does a windows project cost in Washington?

Washington is at the national base for renovation pricing. A typical mid-range windows project of medium size in Washington runs about $7,865–$18,590, including labor, materials, permits, and a 10% contingency.

Are windows costs higher in Washington than the national average?

Washington sits at the national baseline. Costs are close to the U.S. average, though urban metros may run 5–10% higher than rural counties within the state.

Do I need a permit for a windows project in Washington?

Most Washington municipalities require a permit for any work involving plumbing, electrical, structural changes, or roof tear-offs. Cosmetic-only updates (paint, fixtures, hardware) typically don't need one. Contact your local building department to confirm — fees usually run $150–$600 in Washington.

How long does a windows project take in Washington?

Most full-house window replacements take 2–5 days once windows are on site. Washington permit-review timelines and contractor availability can add 1–2 weeks during peak season (spring and early summer). Booking in late fall or winter often shortens the schedule.

← Windows cost calculatorWashington: At national base

Washington cost guide

Window Replacement cost in Washington

Washington window replacements run 18-28% above national — Seattle labor + sales tax on labor + PNW energy code. Below are 2026 windows cost ranges adjusted for Washington, plus a state-specific estimator and FAQ.

Get a personalized Washington estimate

Why is Washington 18% more expensive than the U.S. average?

Washington renovation costs run about 18% above national. See the 3 structural drivers — labor, permits, and code — and how Washington compares to neighboring states.

Read the Washington cost-driver breakdown

Windows cost in Washington vs. the U.S. average (2026)

Mid-range total cost (small / medium / large project sizes), state-adjusted vs. national baseline.

Small job

≈ U.S. avg

1–5 windows

$2,574–$6,435

U.S. avg: $2,574–$6,435

Medium job

≈ U.S. avg

6–15 windows

$7,865–$18,590

U.S. avg: $7,865–$18,590

Whole-house

≈ U.S. avg

16+ windows

$17,160–$37,180

U.S. avg: $17,160–$37,180

Cost ranges in Washington

Total project ranges (low–high) by size and quality tier. Includes labor, materials, permits, and 10% contingency.

Size	Budget	Mid-range	High-end
Small job 1–5 windows	$1,980 – $4,950	$2,574 – $6,435	$4,356 – $10,890
Medium job 6–15 windows	$6,050 – $14,300	$7,865 – $18,590	$13,310 – $31,460
Whole-house 16+ windows	$13,200 – $28,600	$17,160 – $37,180	$29,040 – $62,920

Ranges scope: Vinyl. For other scopes (fixtures, layout changes, etc.) use the full windows calculator.

All ranges are built from publicly available contractor data and industry benchmarks, then adjusted for Washington using labor and material indices. Updated twice yearly. Always get 3+ written bids before committing.

What drives windows pricing in Washington

The three structural factors that make Washington more expensive than the national average for renovation projects in 2026.

WA Energy Code

Washington adopts the State Energy Code requiring U-factor ≤0.28. Triple-pane increasingly common.

Sales tax on labor

Washington's 8.7-10.5% sales tax applies to BOTH materials AND labor on home improvement — unique among major states.

Tech-driven labor competition

Seattle metro installer rates $80-$130/hr.

Full Washington cost-driver breakdown

Washington window replacement pricing by metro

Typical 2026 installed cost for a single mid-tier vinyl double-hung replacement window (35-39" wide × 49-55" tall, energy-rated Low-E double-pane). Larger windows, triple-pane glass, or fiberglass frames run 35-55% higher. Hurricane impact-rated and stucco full-frame metros include those upcharges.

Metro	Typical low	Typical high	Avg / window
Seattle metro	$880	$1,520	$1,200
Bellevue / Eastside	$920	$1,580	$1,250
Tacoma	$760	$1,320	$1,040
Spokane	$640	$1,100	$870

Methodology: per-window installed cost including product, standard install labor, disposal, and standard flashing. Multiply by your total window count for a project estimate, then add 10-15% contingency. Use the calculator below for a precise per-project number factoring in your home's window count and project scope.

Washington vs. neighboring states (windows cost)

Relative cost-index versus each bordering state. Useful if you're sourcing materials, vetting cross-border contractors, or weighing where to take on the project.

Idaho

Washington +28%

View windows cost in Idaho →

Oregon

Washington +5%

View windows cost in Oregon →

Compare all 11 project types across Washington metrosSide-by-side 2026 pricing for kitchen, bathroom, roofing, solar, windows, and 6 more.Open metro hub