Seattle, WA

How Much Does a New Roof Cost in Seattle, WA?

Updated 2026 pricing for Seattle homeowners. Local material costs, labor rates, permit fees, building codes, and climate-specific recommendations for your roof replacement.

Asphalt Shingles

$7,650 – $11,900

1,700 sq ft roof

Standing Seam Metal

$17,000 – $30,600

1,700 sq ft roof

Clay / Concrete Tile

$15,300 – $25,500

1,700 sq ft roof

Average Roof Costs in Seattle by Material

Material Cost Comparison

Based on average roof size of 1,700 sq ft

Asphalt Shingles

Per Sq Ft

$4.50 – $7.00

Per Square

$450 – $700

Total

$7,650 – $11,900

Standing Seam Metal

Per Sq Ft

$10.00 – $18.00

Per Square

$1,000 – $1,800

Total

$17,000 – $30,600

Clay / Concrete Tile

Per Sq Ft

$9.00 – $15.00

Per Square

$900 – $1,500

Total

$15,300 – $25,500

* Costs include materials and installation labor at Seattle rates (labor multiplier: 1.2x vs. national average). Population: 750,000 (metro: 4.0 million).

Cost Breakdown for a 1,700 Sq Ft Roof in Seattle

Cost Component Estimated Cost
Asphalt Shingles (materials + labor) $7,650 – $11,900
Tear-Off ($150/square × 17 squares) $2,550
Disposal ($60/square × 17 squares) $1,020
Building Permit (Seattle) $150 – $500
Estimated Total (Asphalt) $11,370 – $15,970

This breakdown assumes one layer of old shingles to tear off. Multi-layer tear-off, structural repairs, or complex roof geometry will increase costs.

How Seattle's Climate Affects Your Roof

Marine oceanic with ~150 rainy days per year, persistent moss growth, moderate temperatures (40–75°F), Pacific storm winds, and minimal snow in the city.

Rain: ~150 rainy days per year — prolonged moisture exposure is the #1 roofing challenge in Seattle
Moss growth is a major issue: tree-shaded roofs (fir, cedar, maple) remain damp fall through spring; moss roots lift shingles and trap moisture
Pacific storms bring sustained winds, especially fall and winter — testing flashing and edge details
Low UV and cool temps mean less thermal stress but slower shingle adhesive curing
Algae and lichen common on north-facing surfaces due to perpetual dampness
Asphalt shingle lifespan reduced to 17–22 years in PNW (vs. 25–30 nationally) due to constant moisture

Most Popular Roofing Materials in Seattle

1

Composition/asphalt shingles

80%+ of residential roofs in Puget Sound — affordable, widely available; typical lifespan 17–22 years in PNW

2

Standing seam metal

Rapidly growing — excellent rain shedding, moss resistance, 50+ year lifespan

3

Cedar shake

Historically popular in PNW but declining — fire concerns and high maintenance requirements

Seattle Roofing Details

Best Season to Roof

June through September (dry season) — least rainfall, best working conditions. Year-round installation is possible but moisture and cold affect adhesive curing in winter. Peak demand in summer increases prices.

Permit Costs

Building permits in Seattle typically cost between $150 and $500. Contact your local building department for exact fees.

Wind Design Speed

110 mph

Average Roof Size

The average residential roof in the Seattle metro area is approximately 1,800 sq ft.

Seattle Building Codes & Requirements

Seattle Building Code (based on IBC with local amendments)
Moisture management: rainwater management systems and waterproof underlayment emphasized
Wind exposure and terrain adjustment factors per ASCE 7 for Seattle-specific conditions
Washington State Energy Code compliance required
Proper attic ventilation critical for moisture control in Seattle's damp climate
Detached single-family homes may not need a permit for basic shingle replacement (no structural changes)

Seattle Metro Area

Roofing costs can vary within the Seattle metro area based on local labor markets and contractor availability. Nearby cities include:

Bellevue, WA Tacoma, WA Renton, WA Kent, WA Kirkland, WA

Frequently Asked Questions

How much does a new roof cost in Seattle in 2026?
A typical 1,700 sq ft roof in Seattle costs $7,650–$11,900 for composition shingles, $17,000–$30,600 for standing seam metal, and $15,300–$25,500 for tile. Seattle labor rates are about 20% above the national average, reflecting the high Puget Sound corridor cost of living.
Is moss a serious problem for Seattle roofs?
Yes — moss is the #1 maintenance concern for Seattle roofs. Tree-shaded areas stay damp from fall through spring. Moss roots lift shingle tabs and trap moisture, accelerating deterioration. Annual moss treatment and zinc strip installation are strongly recommended. Metal roofing is naturally moss-resistant.
How long does a roof last in Seattle?
Due to Seattle's 150+ rainy days and constant moisture, asphalt shingles last 17–22 years (vs. 25–30 nationally). Metal roofing lasts 50+ years and is increasingly popular for this reason. Cedar shake can last 20–30 years but requires significant maintenance.
When is the best time to replace a roof in Seattle?
June through September is optimal — the driest period with the least rainfall. Some contractors work year-round, but winter moisture affects shingle adhesive curing. Summer is peak demand — book early for the best scheduling.
Do I need a permit for a roof replacement in Seattle?
It depends. Detached single-family homes may not need a permit for basic shingle replacement with no structural changes. However, multi-family buildings and structural modifications do require permits ($150–$500). Contact Seattle SDCI to confirm your specific situation.

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