Flat Roof Replacement cost: Portland vs West Scarborough (2026)
There's essentially no price gap here: flat roof replacement runs close to $10,900 in both Portland and West Scarborough in 2026.
Portland ME
Typically around $10,900
West Scarborough ME
Typically around $10,900
Portland vs West Scarborough: full breakdown
| Factor | Portland | West Scarborough |
|---|---|---|
| Typical 2026 cost | $10,900 | $10,900 |
| Estimated range | $5,600–$16,200 | $5,600–$16,200 |
| Labor index (vs US) | ×1.03 | ×1.03 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.03 | ×1.03 |
| Local permit | $300 | $300 |
| Labor share | $6,550 | $6,550 |
| Materials/equipment | $4,350 | $4,350 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national flat roof replacement range for local labor, climate and permits.
No real cost edge either way
The two metros are effectively a wash for flat roof replacement — pick on contractor quality and timing, not location.
Flat roof replacement by type: Portland vs West Scarborough
Each flat roof replacement option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Portland | West Scarborough |
|---|---|---|
| EPDM (rubber) | $5,600–$13,050 | $5,600–$13,050 |
| TPO | $6,650–$14,100 | $6,650–$14,100 |
| PVC | $7,750–$16,200 | $7,750–$16,200 |
| Modified bitumen | $5,600–$11,950 | $5,600–$11,950 |
| Built-up roofing (BUR) | $7,200–$15,150 | $7,200–$15,150 |
Flat roof replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Flat roof replacement by roof size: Portland vs West Scarborough
Flat and low-slope roofs are priced per square (100 sq ft) and run about $3–$11 per sq ft installed, depending on the membrane. The roof area is close to the footprint since there's little pitch.
| Size | Portland | West Scarborough |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,550–$9,300 | $4,550–$9,300 |
| 1,500 sq ft (15 squares) | $5,600–$11,950 | $5,600–$11,950 |
| 2,000 sq ft (20 squares) | $6,650–$15,150 | $6,650–$15,150 |
| 2,500 sq ft (25 squares) | $8,250–$17,250 | $8,250–$17,250 |
| 3,000+ sq ft (30 squares) | $9,850–$20,450 | $9,850–$20,450 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national flat roof replacement range for local labor, climate and permits.
Cheapest time for flat roof replacement in either city
Storm season pushes demand — and prices — up through summer, since shingles need warm, dry weather to bond correctly. Roofers with open winter calendars will often deal to fill a spring slot.
Where does a smart roofing budget go in 2026?
Roofing budgets swing on decisions most homeowners don't think to ask about — overlay vs. tear-off, shingle tier, deck condition. Our editors break down each one.
The value case
Architectural shingles hit the sweet spot — far more durable than 3-tab for a modest premium, and far cheaper than metal or tile. For most homes they're the right default.
The risk case
Budget for the unknown: rotten decking found at tear-off is the most common surprise. Get the per-sheet repair rate in writing up front so a "cheap" bid doesn't balloon mid-job.
The do-it-right case
Pay for a full tear-off and quality underlayment, flashing and ventilation. An overlay saves money today but traps heat, voids some warranties and costs more at the next replacement.
Full tear-off, architectural shingles and a written deck-repair rate protect you from the two big risks — hidden rot and warranty gaps. The lowest storm-season bid is rarely the cheapest over the roof's life.
Portland vs West Scarborough
Is flat roof replacement cheaper in Portland or West Scarborough?
flat roof replacement costs about the same in both — roughly $10,900 in each city.
Why does flat roof replacement cost more in West Scarborough than Portland?
The main driver is local labor rates: West Scarborough's labor index is 1.03 versus 1.03 in Portland. Climate zone (cold vs cold) also shift the total.
How much is flat roof replacement in Portland, ME?
Expect to pay $5,600 to $16,200 for flat roof replacement in Portland in 2026, averaging around $10,900.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
It doesn't vary by location — Late spring to early fall (dry, 45–85°F) is the discount window in both Portland and West Scarborough (roughly 5–10% off), while mid-winter and the post-storm rush tends to be the most expensive in either city.
Should I choose where to live based on flat roof replacement cost?
Cost shouldn't be the deciding factor between Portland and West Scarborough — they land at nearly the same price. Contractor reputation, scope, equipment tier and timing matter more.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik