How Much Does a New Roof Cost in Seattle, WA? (2027)
Not your house? Change the size or pitch in Seattle, WA
Pick the pitch that matches your roof - the rise over a twelve-inch run. From 9/12 up, crews tie off and work slower, and the price climbs. The Washington default here is 7/12.
Our model puts a new asphalt roof in Seattle, WA at $15,990 to $24,380, based on a typical 2,180 sq. ft. single-story house. The roof itself measures about 2,671 sq. ft. (26.7 squares) at a 7/12 slope, and the price includes labor, materials and removal of the existing layer.
Roofers bid by the square, which is a hundred square feet of roof; here the installed rate works out to $730.14 a square. If you want architectural 50-year shingles instead, plan on $17,770 to $27,090; metal opens at about $34,410 with steel shingles.
That is about $760 above the statewide figure of $15,380 to $23,440, a typical Seattle premium for labor, permits and insurance. The Seattle figures cover its 51 ZIP codes in King County.
What a New Roof Costs in Seattle, WA: Shingles, Metal, Membranes
The roof stays the same size in every row below; only the covering changes. Each price includes tear-off of one layer, and the range shows how far honest bids usually spread.
| Material | Installed cost | Estimate | Per square |
|---|---|---|---|
| Asphalt shingles | |||
| Asphalt shingles, 30-year | $15,990 to $24,380 | $19,500 | $730.14 |
| Architectural shingles, 50-year | $17,770 to $27,090 | $21,670 | $811.40 |
| Metal | |||
| Steel shingles | $34,410 to $52,450 | $41,960 | $1,571.10 |
| Aluminum shingles | $38,050 to $58,000 | $46,400 | $1,737.32 |
| Standing seam metal | $45,870 to $69,920 | $55,940 | $2,094.39 |
| Stone-coated steel tiles | $46,840 to $71,400 | $57,120 | $2,138.71 |
| Flat / low-slope membranes (priced on the 2,180 sq. ft. footprint) | |||
| EPDM rubber membrane | $20,690 to $26,870 | $23,780 | $1,090.41 |
| TPO membrane, 60-mil | $17,800 to $23,120 | $20,460 | $938.47 |
| PVC membrane, 60-mil | $21,530 to $27,960 | $24,740 | $1,134.82 |
Plug the same measurements into the roof replacement calculator, metal roof calculator or flat roof calculator and you will get these exact figures; with the Pacific factor, pitched roofs here price 23% above the U.S. average.
Price per Year of Roof
The real cost of a roof is price divided by the years it lasts. Hover a bar: metal costs more up front and less per year.
Service lives follow the climate-bell model above (asphalt peaks in moderate regions; metal assumes correct installation); prices are the Seattle, WA estimates above.
The Line Items Behind a Seattle, WA Roofing Bid
When two quotes for the same house are far apart, the gap is usually scope. Here is what each common variable is worth on the 26.7-square roof above:
- Old shingles. Removing the existing layer accounts for about $4,670 of the price. A hidden second layer adds roughly $3,030 more.
- Roof shape. When every side of the roof slopes down to a gutter (a hip design), add close to $1,930 over a two-sided gable. Plenty of dormers and valleys raise the add-on to about $3,260.
- Building height. Same roof, two stories up: about $1,390 more, mostly labor and safety staging.
- Roof windows. Each skylight in the scope adds roughly $440 - cheaper now than as a separate job later.
- Roof deck. Ask every bidder for a per-sheet plywood or OSB price. It turns the biggest unknown on the job into a known number.
- Metal details. Drip edge, step flashing and vent boots are cheap to replace during a re-roof; make sure each quote says whether they are new or reused. For gutters, see the gutter cost calculator.
- Fees. Permit cost and debris hauling change from town to town. The quote should name both.
Check a Bid Against Your Roof
Adjust the four choices below until they describe your job, then hold every quote up to the result.
$19,500quotes usually $15,990 – $24,380
Figures cover the 7/12 roof above (2,671 sq. ft.) at Seattle, WA prices; add gutters, skylights and any deck repairs separately.
Compare scope first and price second. A bid that skips new flashing or a decking allowance only looks cheaper.
What the Washington Climate Does to Roofing
Climate Region 2 on the map below covers Washington. Average winter highs run about 37°F, overnight lows about 26°F, and summer afternoons about 80°F. Those numbers translate into a short list of roof stressors in Washington:
Wet months. Months of drizzle keep shaded roofs damp, and moss follows. Good sun exposure, trimmed branches and resistant shingles keep it in check.
Salt air. Near the ocean, salt corrodes steel fasteners, flashing and cut metal edges. Ask for corrosion-resistant nails and flashing, and choose aluminum or coastal-rated metal panels.
Cold snaps. Repeated freezing and thawing pries at nail holes, seams and flashing. Ask for ice barrier along the eaves and new flashing everywhere the roof meets a wall.
Where Shingles Live Longest: the Climate Bell
Asphalt life peaks in the moderate middle (Region 3) and falls toward BOTH ends of the map above - cold regions destroy shingles with ice dams, hot ones bake them. Note the middle columns: shingles marketed as “lifetime” are good for about 25 real-world years at best - Washington is Region 2. Hover any column.
low pitch holds snow and ice - it costs the most years in cold regions
Planning figures from our climate model, for ventilation-correct installs - a baked, unvented attic can take years off any column. Pitch adjusts the asphalt columns only; metal sheds snow at any sane pitch.
Roof Replacement Cost Near You
Pricing a Metal Roof in Seattle, WA
Metal costs more on day one and less for each year the roof lasts. Here is what each type would cost on a typical 2,180 sq. ft. single-story house in Seattle, WA, and where each one makes sense.
- Standing seam: $45,870 to $69,920. One panel covers the whole run from the ridge down to the gutter, so water has almost no joints to find. Roofers like it on low pitches and simple gables. The premium over architectural shingles here is roughly $34,270.
- Steel shingles: $34,410 to $52,450. Aluminum shingles: $38,050 to $58,000. If the neighbors would frown at ribbed panels, this is the answer. From the curb they read as shingles or shake. Aluminum is lighter and never rusts; steel costs less and takes a hailstone better.
- Stone-coated steel: $46,840 to $71,400. A steel base under a granule finish. You get the tile look at a small part of the weight of real tile.
- Copper: custom quote only. Copper has no price in our tools: each job is a custom quote, and it runs well past standing seam. In return it can outlive the house. Use it where people will see it, like a front porch or a turret.
Winter decides it here. Metal sheds snow, so ice dams seldom form and the roof lasts longer. In summer a light finish keeps the attic cooler, but skip copper if you want that effect.
Moss struggles to grip metal, which keeps maintenance low through the wet months. Think about your timeline: metal's higher price spreads across many more years, but only if you are there to use them. Price a specific panel, gauge and finish with the metal roof calculator.
Timing a Roof Replacement in Seattle, WA
Roofers prefer the dry stretch of summer and early fall. Wet-season jobs are possible but need careful tarping each night.
Seattle, WA Flat Roof Replacement Cost
Porches, additions, garages and some whole houses have roofs too flat for shingles; they get a membrane. Priced on the full 2,180 sq. ft. footprint in Seattle, WA:
- EPDM rubber: $20,690 to $26,870. Synthetic rubber, usually black, laid in wide sheets with glued or taped seams. It shrugs off hail and hard frost and is easy to patch, so it suits garages, porches and roofs nobody sees.
- TPO, 60-mil: $17,800 to $23,120. It goes down in sheets that the crew fuses together with a hot-air gun, so there are no glued seams to fail. A common pick when the flat roof sits over a bedroom or a kitchen.
- PVC, 60-mil: $21,530 to $27,960. The premium white membrane: welded seams, a strong fire rating, and good resistance to puddles and chemicals. It fits roofs that carry foot traffic or hold water after a storm.
Price order in Seattle, WA: TPO first, PVC last, with EPDM between them. Tear-off of one existing layer and new polyiso board are part of each figure. A small section will price higher per square foot. Ponding water is the main enemy of flat roofs through a Washington winter. Ask for tapered insulation at low spots and clear drains. Price your exact membrane, insulation thickness and drains with the flat roof calculator.
Plan for winter first: welded seams and clear drains. A white membrane is still worth it over rooms that get hot in July.
Nearby Washington City Guides
Moving or comparing? The standard asphalt roof in other Washington cities:
- Bellevue, WA: $15,800 to $24,090, about 7 miles east
- Tacoma, WA: $15,890 to $24,210, about 30 miles south
- Vancouver, WA: $15,710 to $23,940, about 140 miles south
- Spokane, WA: $15,740 to $23,990, about 230 miles east
Roofers serving Seattle also cover Renton, Bremerton, Kent, Everett and Federal Way, generally at similar prices. The Washington roofing cost guide has the statewide numbers and every city.
Common Questions About Re-Roofing in Seattle, WA
What does a roof square mean on a quote?
Measure the area the roof covers, then scale it up for slope. The 2,180 sq. ft. footprint in this guide, sloped at 7/12, grows to near 2,671 sq. ft. - 26.7 squares once overhang and waste are counted. Ask each roofer for their square count in writing.
Who pulls the roofing permit in Washington?
Usually. Permit rules are set locally, and most require one for a complete re-roof. A licensed roofer pulls it in their own name.
Can I file an insurance claim for a new roof?
Covered: hail, wind, fallen trees. Not covered: age and wear. With asphalt at $15,990 to $24,380 in Seattle, WA, it pays to read your roof settlement terms now, not after a storm.
How long does a re-roof take?
A typical 26.7-square asphalt job takes from one day to a few, depending on layers, pitch and weather. Metal and cut-up roofs take longer. Any section left open overnight should be covered.
Related calculators: Roof Replacement Calculator · Metal Roof Calculator · Flat Roof Calculator · Gutter Cost Calculator · Attic Insulation Calculator · Roof Heat Cable Calculator
About the numbers: each figure runs through our roofing calculators, adjusted for the Pacific market and updated for inflation every year. Treat them as a planning guide and compare at least three written bids on identical scope.
Quick Answers
Answers use Washington averages; energy prices updated October 2026.
What time of year is best for a new roof in Washington?
The warm months. With winter afternoons near 37°F in Washington, shingle adhesive strips struggle to bond, so most crews book late spring into early fall; a cold-weather job needs hand-sealed tabs.
Does a new roof in Washington need an ice barrier membrane?
In much of Washington, yes. Winter lows around 26°F bring regular freeze-thaw, and colder, higher areas see ice dams. At minimum, put it in valleys and at roof-to-wall joints.
Does metal roofing make sense in Washington?
It depends on how long you stay. Metal costs more now and lasts much longer; Washington weather (winter lows near 26°F, summer highs near 80°F) favors neither choice, so compare cost per year of service.
Will a lighter roof lower cooling costs in Washington?
Somewhat. With summer highs near 80°F and power at 16.5¢ per kWh (national average 21.7¢), a lighter roof trims AC use; pair it with good attic ventilation.
Can new shingles go on top of the old roof?
Sometimes, if only one layer is on now and local code allows a second. A full tear-off costs more but exposes the deck, so rotted boards get replaced rather than buried.
Run your own numbers: Roof replacement calculator or Metal roof cost calculator.
More Roofing Cost Guides
Washington Roofing costs (statewide) · Roofing costs in every state
