Roofing Cost Calculator
Estimate what a roof replacement should cost. Pick your roof type, enter the size and pitch, and see the real numbers — materials, labor, permits, and disposal.
Last updated: June 2026
1 square = 100 sq ft of roof area
Cost Breakdown — 17 sq Architectural Shingle
1,500 sq ft ground area · medium pitch
For a 17-square architectural shingle replacement, your estimated cost is $9,794.
National average range: $7,500 – $18,000 (typical: $11,000).
These estimates use national average material and labor costs for 2026. Your actual costs may vary 20–40% based on your region, roof complexity, and local labor rates. Always verify with your supplier.
How This Calculator Works
Material prices reflect 2026 US averages. Architectural shingles run $90/square, 3-tab shingles $65/square, standing seam metal $275/square, and TPO membrane $140/square. Accessories (underlayment, drip edge, ridge vent, flashing) are priced per unit and scaled by your roof size.
Squares are auto-suggested from your ground area and pitch. One square equals 100 sq ft of roof surface. A 1,500 sq ft home with medium pitch has about 17 squares. Override the number if you have a takeoff from actual roof measurements.
Pitch affects both area and labor. Medium pitch (4–8/12) adds 12% to roof area and 15% to labor time. Steep pitch (8/12+) adds 25% area and 40% labor — crews need harnesses and scaffold on anything above 8/12.
Tear-off is priced at $80/square flat — this is the going piece-rate for removing and disposing of existing shingles. Toggle it off for new construction.
Profit margin defaults to 25% — the industry standard for residential roofing. Adjust from 10% to 40% based on your market and how competitive the bid is.
Roof Replacement Cost Ranges (2026 National Averages)
| Roof Type | Low End | Typical | High End |
|---|---|---|---|
| Architectural Shingle (15–20 sq) | $7,500 | $11,000 | $18,000 |
| 3-Tab Shingle (15–20 sq) | $5,500 | $8,000 | $13,000 |
| Metal Standing Seam (15–20 sq) | $14,000 | $22,000 | $35,000 |
| Flat TPO / Membrane (15–20 sq) | $7,000 | $11,500 | $18,000 |
Source: Aggregated contractor reports, HomeAdvisor and Angi public pricing data, 2026. Covers 1,500–2,000 sq ft homes with 15–20 squares. Regional prices may vary significantly.
Frequently Asked Questions
How much does a roof replacement cost in 2026?
A typical architectural shingle roof replacement on a 1,500–2,000 sq ft home costs $7,500–$18,000, with a national average around $11,000. 3-tab shingle roofs run 20–30% less. Metal standing seam roofs are the priciest at $14,000–$35,000. Your final price depends on roof size (measured in squares), pitch, tear-off requirements, and local labor rates.
How do roofing contractors calculate the number of squares?
One roofing square equals 100 square feet of roof area. To calculate: measure the ground footprint of the house, multiply by the pitch factor (1.06 for low slope, 1.12 for medium, 1.25 for steep), then divide by 100. A 1,500 sq ft home with a medium pitch has about 16.8 squares. Always round up and add 10–15% for waste on gabled roofs, 15–20% on hip roofs.
How does roof pitch affect the cost?
Pitch impacts cost in two ways. First, steeper roofs have more surface area per square foot of ground footprint — a 12/12 pitch roof has 1.25× the area of a flat roof. Second, steep roofs take longer to work on because crews need harnesses, scaffolding, and walk boards. Our calculator applies both an area multiplier and a labor multiplier based on the pitch you select.
Should I include tear-off in my roofing estimate?
Include tear-off if you're replacing an existing roof — most jurisdictions require removing 2+ layers of old shingles before installing new ones. Tear-off costs about $80 per square ($1,200 for a typical 15-square roof). If you're roofing new construction or the existing roof has only one layer and is in good condition, you may be able to overlay — but most pros recommend full tear-off so they can inspect the deck.
What profit margin should roofing contractors use?
Most roofing contractors aim for 20–30% profit margin on residential replacements. The industry average sits around 25%. Storm damage and insurance jobs often run tighter at 15–20% because the insurance adjuster caps the payout. Custom slate, tile, or metal work can justify 30–40% margins. Our calculator defaults to 25% — adjust to match your market.
Are permits and dumpster fees included in roofing estimates?
Yes — any legitimate roofing estimate includes permit and disposal fees. Building permits typically cost $150–$350 depending on jurisdiction. Dumpster rental runs $350–$550 for a 20–30 yard container. If a contractor omits these, they're either cutting corners or planning to bill you later. Our calculator includes both by default so your number matches the final invoice.
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Roofing Estimate TemplateMarcus Webb
Lead Reviewer & Construction Tech Analyst
Marcus spent 8 years working with general contractors and trade businesses before focusing on construction technology. He has personally tested 30+ estimating and project management tools with real project data.
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