Shingle Roof Replacement Cost in Seattle: What Homeowners Need to Know
A shingle roof replacement in Seattle typically runs $6,800 – $19,500 installed — $425 – $850 per square (100 sq ft) — from 3-tab up to architectural grade, tear-off included.
New roof installs & full replacements · No obligation
Shingle roofing cost by grade.
Installed prices for a full shingle replacement in Seattle. Roofers quote per square (100 sq ft) — a typical single-family roof runs 17–25 squares.
- 3-tab shinglesFlat profile, 15–20 year typical service$6,800 – $13,000
- Architectural shinglesDimensional, 25–30 year — the U.S. default$9,900 – $19,500
- Designer / premium shinglesSlate and shake look-alikes$15,000 – $31,000
- Underlayment & ice barrierSynthetic felt, ice & water shield where code requires$600 – $2,500
- Deck repair (plywood)Replacing rotted sheathing, priced by extent$600 – $3,100
- Tear-off & disposalOld layers off, dumpster included$1,250 – $3,700
- Permits & inspectionVaries by municipality$300 – $1,250
* Adjusted for Seattle's labor market — an on-site measure sets the square count.
Ready to price your roof in Seattle?
Speak with a licensed, independent roofing contractor. No obligation.
Lines: Mon–Fri 10am–7pm
What happens when you call
Call the number
Takes about two minutes — no account, no forms.
Describe your roof
Roof type, approximate size, and what you want done in Seattle.
Talk to a licensed contractor
You get connected with an independent local roofing pro. No obligation.
Build your Seattle estimate
Adjust the inputs below. The range updates live and is adjusted for Seattle's labor market —+23% vs national avg.
Indicative range based on Seattle-adjusted rates. Deck condition, flashing, and contractor overhead may shift the final invoice. Get written quotes from licensed roofing contractors before signing.
Get real quotes for this range · No obligation
Before you sign: the quote checklist
- Get quotes from at least 3 licensed roofing contractors in Seattle.
- Make sure every quote itemizes tear-off, underlayment, flashing, and disposal.
- Verify licensing and insurance before hiring — ask for certificates, not promises.
- Ask about both the material warranty and the workmanship warranty — they differ.
Shingle Roof in Seattle: what matters
Seattle's iconic older neighborhoods like Ballard and Capitol Hill are filled with early 20th-century homes, many still sporting their original cedar shakes or early asphalt shingles. Combine that with the region's notorious wet winters, occasional windstorms, and the 2021 heat dome that stressed roofs across the city, and it's clear that Seattle homeowners face unique challenges when it comes to roof replacement. Whether you own a craftsman bungalow in Wallingford or a mid-century rambler in West Seattle, understanding the local factors that influence shingle roof replacement costs is essential. This guide covers the climate, housing stock, and regulatory landscape specific to Seattle and Washington state, helping you plan for a new roof without the guesswork.
Why Shingle Roof Replacement Costs Vary in Seattle
Seattle's marine climate—with frequent rain, moderate temperatures, and high humidity—means shingles often wear differently than in drier regions. Moss and algae growth can shorten roof life, and the region's occasional windstorms (like the 2018 bomb cyclone) can lift or damage shingles. Many Seattle homes have steep roof pitches, especially in older neighborhoods, which increases labor time and safety requirements. Washington's energy code also mandates certain underlayment and ventilation standards that can affect material choices. Additionally, disposal fees at local transfer stations and the cost of permits from the city's permitting office add to the total. Labor rates in the Seattle metro area are higher than the national average, reflecting the competitive construction market and cost of living.
Seattle by the numbers
U.S. Census Bureau · ACS- 988,217
- Population
- 210,431
- Homeowners
- $822,890
- Median home value
- $110,147
- Median income
- 1971
- Median home built
- 473,864
- Housing units
210,431 homeowner households, median home built 1971 — a housing stock where many roofs are at or past their service life. Local labor sets the rate roofers charge in Seattle.
Common Reasons Seattle Roofs Need Replacement
Wind Damage
Seattle's fall and winter windstorms, including the 2018 bomb cyclone, can lift shingles or tear them off entirely, especially on older roofs with compromised sealant.
Moss and Algae Growth
The damp, shaded conditions common in Seattle neighborhoods like Ballard promote moss and algae, which trap moisture against shingles and accelerate granule loss and decay.
UV Degradation
Despite the cloudy reputation, Seattle gets enough summer sun to cause UV cracking and brittleness in asphalt shingles, particularly on south-facing slopes.
Ice Dams
While less common than in colder climates, Seattle's freeze-thaw cycles can create ice dams at eaves, forcing water under shingles and causing leaks that lead to premature replacement.
Age and Wear
Many Seattle homes still have original roofs from the 1990s or earlier. Asphalt shingles typically last 20–30 years, and the constant wet-dry cycles in the Pacific Northwest can shorten that lifespan.
What to Expect During a Seattle Roof Replacement
In Washington, roofing contractors must be registered with the state's Department of Labor & Industries and carry a valid contractor license. For Seattle, you'll need a permit from the city's permitting office, which typically requires a site plan and may involve a structural review for older homes. The process starts with an inspection and measurement, followed by a tear-off of the existing shingles. The crew will inspect the decking, replace any rotted sections, and install underlayment and flashing. New shingles are then nailed in place, and the job concludes with a final inspection by the city. Expect the work to take 2–5 days depending on roof size and weather, with tarps used to protect your property during Seattle's unpredictable rain.
Shingle Roof pricing near Seattle
Shingle Roof cost questions — Seattle
How long does a shingle roof last in Seattle's climate?
In Seattle's wet, mild climate, asphalt shingle roofs typically last 20 to 30 years. However, factors like moss growth, wind exposure, and UV damage can shorten that lifespan. Regular maintenance and prompt removal of moss can help maximize longevity. Homes in shaded areas or with north-facing slopes may see more moss and algae, potentially reducing shingle life.
What factors affect the cost of a shingle roof replacement in Seattle?
Costs vary based on roof size, pitch, accessibility, and the type of shingles chosen. Seattle's steep roofs and older homes may require more labor. Disposal fees at local transfer stations and permit costs from the city's permitting office also add to the total. Additionally, Washington's energy code may require upgraded underlayment or ventilation, influencing material choices.
Do I need a permit for a roof replacement in Seattle?
Yes, Seattle requires a building permit for roof replacements. Your contractor should handle the permit application, which typically includes a site plan and may require a structural review for older homes. The city's permitting office will schedule a final inspection after the work is complete to ensure compliance with local building codes.
What is the ideal time of year to replace a roof in Seattle?
The ideal time is late spring through early fall (May to September) when rain is less frequent. However, experienced crews can work in light rain, and many contractors schedule around weather forecasts. Winter replacements are possible but may face delays. Planning ahead and booking early in the season can help secure a convenient slot.
How do I choose a roofing contractor in Seattle?
Look for contractors registered with Washington's Department of Labor & Industries, and verify their license and insurance. Ask for local references and check online reviews. A reputable contractor will provide a detailed written estimate, explain the permit process, and offer a warranty on materials and workmanship. Avoid high-pressure sales tactics and always get multiple quotes.
Get a shingle roofing quote.
3-tab or architectural — compare quotes from licensed local roofers.
Lines: Mon–Fri 10am–7pm