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Seattle Roofing Cost Calculator

Get an instant estimate for your roof replacement. Enter your details below to see real Seattle-area pricing.

Use our free roofing cost calculator to estimate the price of a new roof for your Seattle-area home. Most homeowners pay $8,000 to $30,000 for a full roof replacement, depending on material and roof complexity.

Your roof area is typically 1.2 to 1.5x your home's square footage.

2,000 sq ft

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Most residential roofs are standard pitch (4:12 to 8:12).

Estimated Cost Range

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Based on Seattle-area pricing, updated April 2026

Materials

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Labor

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Tear-off

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Surcharges

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This is an estimate based on average Seattle-area pricing. Your actual cost may vary based on roof complexity, accessibility, and specific conditions. For an exact quote, schedule a free on-site inspection.

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Cost Comparison

How Much Does Each Roofing Material Cost in Seattle?

Current Seattle-area pricing for all major roofing materials. Costs include materials, labor, underlayment, and standard flashing.

Material Cost / Sq Ft 2,000 Sq Ft Home
3-Tab Shingles $3.50–$5.50 $7,000–$11,000
Architectural Shingles $4.50–$7.00 $9,000–$14,000
Standing Seam Metal $10–$16 $20,000–$32,000
Corrugated Metal $6–$10 $12,000–$20,000
Cedar Shake $8–$14 $16,000–$28,000
TPO (Flat) $5–$9 $10,000–$18,000
PVC (Flat) $6–$11 $12,000–$22,000
Composite $7–$12 $14,000–$24,000

Prices reflect Seattle/King County area averages as of April 2026. Actual costs vary by project complexity. Compare all roofing materials

Pricing Factors

What Factors Affect the Cost of a New Roof?

01

Roof Size

Every 100 sq ft adds $350 to $1,600 depending on material. Larger roofs benefit from slightly lower per-square-foot pricing.

02

Material Choice

The single biggest cost factor. Shingles are most affordable. Metal and cedar cost 2 to 3x more but last 2 to 3x longer.

03

Roof Pitch

Steeper roofs (8:12+) add 15 to 25% to labor costs due to safety equipment and slower installation speed.

04

Number of Stories

Second and third story roofs add 10 to 20% due to equipment, scaffolding, and access requirements.

05

Tear-off vs. Overlay

Removing the existing roof adds $1,000 to $3,000. Required when two layers already exist or when deck inspection is needed.

06

Roof Complexity

Valleys, dormers, skylights, chimneys, and hip ridges increase labor time and material waste significantly.

07

Decking Condition

Rotted decking replacement adds $2 to $5 per sq ft. Seattle moisture makes this a common cost addition.

08

Permits

Seattle-area building permits for roofing typically cost $200 to $500 depending on municipality and scope.

Local Pricing

Why Roofing Costs Vary in the Seattle Area

Labor rates in King County run 15 to 25% higher than the national average, driven by demand and cost of living. PNW moisture requires higher-quality underlayment, proper ventilation systems, and moss-resistant treatments that add to material costs.

Seasonal pricing matters. Fall and winter scheduling is slightly less expensive because it is the off-peak season for roofing contractors. Spring and summer book up fast, so plan ahead for the best pricing and availability.

Washington state building codes require specific ventilation ratios, ice and water shield in valleys, and structural load ratings that may exceed minimum national standards. These requirements affect material selection and labor hours.

Next Steps

How to Get an Exact Roofing Quote

1

Use Our Calculator

Get an instant estimate based on your roof details.

2

Schedule Inspection

We measure your roof, inspect the decking, and assess complexity.

3

Receive a Quote

Line-item pricing with material options. No hidden fees.

4

Compare and Decide

No pressure. Honest recommendations, your timeline.

FAQ

Roofing Cost Questions

Answers to the most common roofing cost questions from Seattle homeowners.

How much does a new roof cost in Seattle?
Most Seattle-area homeowners pay $8,000 to $30,000 for a full roof replacement. Composition shingles (the most common choice) cost $8,000 to $15,000 for an average home. Metal roofing costs $15,000 to $30,000. Cedar shake costs $16,000 to $28,000. Flat roofing systems (TPO/PVC) cost $10,000 to $22,000. The final price depends on roof size, material, pitch, accessibility, and whether tear-off is required.
How much does it cost to replace a roof on a 2,000 square foot house?
For a 2,000 sq ft roof in the Seattle area: composition shingles cost $9,000 to $14,000, standing seam metal costs $20,000 to $32,000, cedar shake costs $16,000 to $28,000, and TPO flat roofing costs $10,000 to $18,000. These ranges include tear-off, disposal, underlayment, flashing, and installation labor.
What factors affect roof replacement cost?
The seven main factors are: roof size (measured in squares, where 1 square = 100 sq ft), material choice, roof pitch (steeper = more expensive), number of stories, tear-off requirements, roof complexity (valleys, dormers, skylights), and condition of existing decking. In the Seattle area, moisture damage to decking is a common cost addition.
How much does a metal roof cost compared to shingles?
In the Seattle area, a metal roof costs roughly 2 to 2.5x more than composition shingles upfront. However, metal roofs last 40 to 70 years vs. 20 to 30 years for shingles. On a cost-per-year basis, metal roofing can be less expensive over the long run, with metal requiring zero maintenance vs. periodic moss treatment for shingles.
Does roof pitch affect the cost of replacement?
Yes. Standard pitch roofs (4:12 to 8:12) are the baseline. Steep roofs (8:12 to 12:12) add 15 to 20% to labor costs. Very steep roofs (12:12+) add 20 to 30%. Steep pitch requires special safety equipment, harnesses, and slower work pace. Low-slope roofs (under 4:12) require different materials like membrane systems, which also affects cost.
How much does a flat roof replacement cost?
Flat roof replacement in the Seattle area costs $5 to $12 per sq ft installed. For a 1,000 sq ft flat section, expect $5,000 to $12,000 for TPO or $6,000 to $14,000 for PVC membrane. Commercial flat roofs on larger buildings cost $50,000 to $150,000+ depending on size.
What is the cheapest roofing material?
3-tab asphalt shingles are the least expensive option at $3.50 to $5.50 per sq ft installed. However, they only last 15 to 20 years. Architectural shingles cost 20 to 30% more but last 10 years longer and offer better wind resistance and curb appeal. For the best long-term value, architectural shingles or standing seam metal provide the lowest total cost of ownership.
How much do roofers charge per square?
In the Seattle area, roofing contractors charge $350 to $1,600 per square (100 sq ft) depending on material. Composition shingles: $350 to $700 per square. Metal roofing: $600 to $1,600 per square. Cedar shake: $800 to $1,400 per square. These rates include labor, material, underlayment, and standard flashing. Tear-off adds $100 to $200 per square.

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