Roof Replacement Cost Calculator

How much does it cost to replace a roof?

Replacing a roof is one of the largest single expenses a homeowner will face, and the price swings wildly based on material, roof pitch, layers to tear off, and where you live. In 2025, most U.S. homeowners pay between $8,500 and $18,000 for a full asphalt shingle replacement on an average 1,700 sq ft home. Metal roofing runs $15,000–$35,000, and tile or slate can push past $40,000. Our calculator uses live national baselines from HomeAdvisor, Fixr, and Angi, then adjusts by ZIP code so your estimate reflects labor and material costs in your local market rather than a national average that misses by 20–40%.

What drives the cost

Roof replacement pricing breaks down into four buckets:

• Material (35–45% of total) — Basic 3-tab asphalt shingles cost $1.50–$2.50 per sq ft installed. Architectural (dimensional) shingles run $3.50–$5.50. Standing-seam metal is $10–$16, clay tile $12–$25, and natural slate $20–$35 per sq ft.
• Labor (25–35%) — Roofing crews charge $45–$75 per hour, and a typical tear-off + install takes 3–5 days on a mid-size home.
• Tear-off and disposal (5–10%) — Removing one layer adds $1–$2 per sq ft; a second layer or wet decking pushes it to $3+.
• Underlayment, flashing, vents, permits (10–15%) — Synthetic underlayment, ice-and-water shield, ridge vents, drip edge, and municipal permits (typically $150–$500).

How to use the calculator

Enter your roof's square footage (or your home's footprint and pitch), pick your preferred material, indicate how many existing layers need to come off, and add your ZIP code. The engine multiplies the national baseline by your regional cost multiplier — Bay Area or NYC ZIPs can run 1.35–1.55× the national average, while much of the Midwest and South is 0.85–0.95×. The output shows a low, mid, and high estimate because roofing quotes for the exact same job vary by 15–25% between reputable local contractors.

When to replace vs. repair

If your roof is under 15 years old and has isolated leaks, missing shingles, or storm damage on less than a third of the surface, targeted repair is almost always cheaper. Full replacement makes sense when:

1. Age — Asphalt shingles are typically warrantied 20–30 years; performance drops sharply after year 18.
2. Widespread granule loss — If you see bald patches or heavy granules in gutters, the shingles are near end of life.
3. Deck damage — Soft spots, sagging, or visible daylight from the attic mean the plywood decking is compromised.
4. Insurance-triggered replacement — After hail or wind events, insurers often replace rather than repair because patched work voids warranties.

Ways to save money

• Get 3–5 quotes. Roofing is one of the most competitive trades; the spread on identical scopes is regularly $3,000–$5,000.
• Time the job for shoulder season. Late winter and early spring are slow for most crews — many contractors discount 5–10% to keep teams working.
• Choose architectural shingles over 3-tab. They cost slightly more up front but last 10+ years longer and often qualify for insurance discounts.
• Bundle with gutters or siding. If your gutters or fascia need work, doing everything at once saves 8–15% on shared labor and setup.
• Check for insurance and utility rebates. Impact-rated shingles can drop your homeowner's premium 10–30% in hail-prone states, and some utilities rebate cool-roof or reflective materials.

Signs you're getting a fair quote

A trustworthy quote will:

• List brand and product line of shingles (e.g., GAF Timberline HDZ vs. generic "30-year shingle")
• Specify tear-off, underlayment type, and how many layers are included
• Include flashing replacement, ridge/soffit venting, and drip edge
• State warranty terms for both material and workmanship (10-year workmanship is standard)
• Show payment schedule with a small deposit (10–20%), not full payment up front

Beware of storm-chasers offering to "eat your deductible" or contractors pressuring you to sign the day of inspection — both are red flags for insurance fraud that can leave the homeowner liable.

Regional cost snapshot

Coastal California, the NYC metro, and coastal New England are consistently the most expensive markets. The Deep South, Texas, and the Great Plains are typically 15–25% below the national average. Hurricane-prone coasts (Florida, Gulf Coast) carry a premium for code-required wind mitigation. Snow-load states (Colorado, Minnesota, Vermont) need heavier decking and ice-and-water shield to code, which adds $500–$1,500.

Use the ZIP code field in the calculator to see your specific multiplier — the difference between two ZIP codes 50 miles apart can be significant, especially crossing an urban/rural boundary.

Financing options

Most reputable roofers offer financing through third parties like GreenSky, Synchrony, or Enerbank. Typical terms are 6–18 months at 0% (with hidden dealer fees baked into the price) or 5–15 years at 7–12% APR. Compare against a HELOC (usually cheaper) or paying cash. Insurance-covered replacements after storms should be paid at claim close — never let a contractor keep the check.

After the install

• Walk the roof (or hire an inspector) with the contractor before final payment
• Confirm ridge vent, drip edge, and pipe boots were replaced
• Save the AHRI-equivalent product warranty documents and register online within 60 days
• Ask for the manufacturer certification transfer at closing when you sell