Roof Replacement Cost in Philadelphia, PA (2026)
Budgeting for a new roof in Philadelphia, PA starts with honest numbers. This guide sets out 2026 per-square-foot prices for shingle, metal and flat rowhouse roofs, explains what moves a bid higher or lower, and lists what a roofer's written estimate should spell out. Each figure names its source and year.
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Costs by Roof Type
The prices below come from RoofObservations' Pennsylvania cost guide, last updated in January 2026. They are averages for the whole state, they already include tearing off the old roof, and both metal rows assume steel panels; aluminum runs higher. The same guide puts the Philadelphia metro at the top of the state's price range, so a city job may well land above these figures.
| Cost row | Figure | Source (year) |
|---|---|---|
| Pennsylvania 3-tab shingles, per sq ft | about $6.45 | RoofObservations, 2026 |
| Pennsylvania architectural shingles, per sq ft | about $7.10 | RoofObservations, 2026 |
| Pennsylvania premium shingles, per sq ft | about $8.80 | RoofObservations, 2026 |
| Pennsylvania exposed-fastener metal, per sq ft | about $9.50 | RoofObservations, 2026 |
| Pennsylvania standing-seam metal, per sq ft | about $14.65 | RoofObservations, 2026 |
Each figure is an installed price per square foot of roof surface. Pitch and overhangs make that surface bigger than the floor plan, so measure the roof, not the rooms. Slate and clay tile are left out on purpose. They turn up on many stone colonials and Victorians in Northwest neighborhoods such as Chestnut Hill and Mount Airy, and the work varies too much to average. A roofer who handles slate has to see the roof and quote it directly.
Flat (low-slope) roofs
| Cost row | Figure | Source (year) |
|---|---|---|
| Modified bitumen, per sq ft | about $10.55–$11.10 | RoofObservations, 2026 |
| EPDM, per sq ft | about $5.60–$6.45 | RoofObservations, 2026 |
| TPO, per sq ft | about $5.25–$6.15 | RoofObservations, 2026 |
Rowhouses are the most common home in the city, and most of them have a gently sloped roof that sheds water toward the back. These three figures come from the guide's commercial table, so use them loosely. A small rowhouse roof often costs more per square foot than a big one, because roofers set a minimum charge for any job. A fresh silver or white coating is upkeep rather than a new roof; ask the roofer whether the membrane underneath is still sound.
For a quick sense of scale, take a one-story home of about 1,750 sq ft with a walkable pitch. With overhangs it carries roughly 2,160 sq ft of roof, which works out to about $13,900 to $19,000 at the shingle rates above. The roof cost calculator runs the same math for your home's size and shape.
Pitch, Layers and Size
Identical floor plans on one block can still end up with estimates far apart. These are the usual reasons.
- Square footage of roof. Surface area moves the total more than anything else. A two-story house has less roof per square foot of living space than a ranch of the same size.
- Steepness and shape. A steep pitch, dormers, valleys and chimneys slow the crew down and call for more flashing and safety gear, which adds labor.
- Layers already up there. Each old layer that comes off adds hours and disposal. Ask how many layers the roof has now and whether all of them will be stripped.
- Decking repairs. Rotted or soft boards only show once the old roof is off. A careful contract sets a price per sheet of replacement wood before work begins.
- Slate removal. Pulling off old slate is slow, heavy work, and it usually costs more than stripping shingles.
- Permit and contractor rules. Every Philadelphia re-roof needs a permit from L&I, and the work must be done by a contractor the City licenses. The permit cost belongs in the bid, so ask who files it.
- Rowhouse details. Flashing where the roof meets the party walls, the rear drain or gutter, and any coating may be priced as extras. Ask which ones the price covers.
The Parts of a Good Estimate
The estimate comes from the roofer, never from this site. Many roofers give estimates at no charge; ask the roofer before the visit. Get it in writing, and check that it covers each of these points.
- Materials by name. The shingle line, metal panel type or flat-roof membrane (modified bitumen, EPDM or TPO), plus whether a coating is included.
- Measured area. The roof's square footage, with tear-off and the number of layers coming off.
- Wood replacement. A per-sheet price for any decking that turns out to be damaged.
- Water protection. Flashing at chimneys, walls and edges. On pitched roofs, ask about ice-and-water shield at the eaves and about attic ventilation.
- Permit. Who pulls it and whether its cost is in the total. Historic properties need Historical Commission review first.
- Two warranties. The maker's warranty on materials and the roofer's warranty on labor, each written down with its length.
- Payment terms. On a contract above $5,000, Pennsylvania caps the deposit at one-third of the price, plus any special-order materials. Nothing is owed before signing.
Line up two or three estimates side by side and compare them item by item, not just the bottom line. A low price that skips the flashing or the decking allowance is not really lower.
Insurance and Your Roof Cost
Whether a policy pays toward a new roof depends on the policy and on what caused the damage, so read yours or ask your agent. If a storm is involved, a roofer can photograph the damage and write up what the repair would cost. Settling the claim is up to you and your insurer, or a licensed public adjuster or attorney you choose to hire.
Your deductible is yours to pay. A contractor who offers to absorb or waive it while billing the insurer the full price is waving a red flag. On the brighter side, some insurers credit impact-rated (Class 4) shingles, each on its own terms, so ask yours before you pick a material.
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