Roof Cost Calculator
Estimate total roof replacement cost from roof size, material type, regional labor rates, and tear-off layers. Get an all-in cost range before contacting contractors.
Know your number before you call a contractor. Enter your roof squares, material type, and location below to estimate total replacement cost.
Use the roof area calculator to find your square count.
Architectural asphalt shingles — most common residential material.
Southeast — lowest labor rates nationally.
Simple gable or basic hip — no dormers or skylights.
Standard single-layer tear-off ($50–$100 per square).
Enter your roof size
to estimate cost
Related Roofing Calculators
Roofing area, pitch, cost, and material estimation tools for residential and commercial projects.
Roof cost formula
A full roof replacement cost has four components: materials, labor, tear-off and disposal, and permit overhead. Each scales directly from the number of roofing squares. Omitting any component — the most common amateur mistake — produces estimates 50 to 70 percent below actual contractor quotes.
Total Replacement Cost
Total = Mc + Lc + Tc + Permits
- Mc = Squares × (1 + Waste%) × Material cost per square
- Lc = Squares × Regional labor rate × Complexity multiplier
- Tc = Squares × Existing layers × Tear-off rate per square
Worked example. 20-square architectural asphalt roof, Southeast, single layer tear-off, moderate complexity (1.1): Materials = 20 × 1.10 × $150 = $3,300. Labor = 20 × $180 × 1.1 = $3,960. Tear-off = 20 × $75 = $1,500. Permits = $500. Total: $9,260 ($4.63/sq ft installed). Use the roof area calculator to convert your building dimensions into squares before running this estimate.
Material cost benchmarks
| Material | Cost per square | Lifespan | Rating |
|---|---|---|---|
| 3-tab asphalt shingles | $80–$130 | 15–25 years | Budget |
| Architectural asphalt shingles | $130–$200 | 25–50 years | Standard |
| Metal (exposed fastener) | $250–$500 | 30–50 years | Mid-range |
| Metal (standing seam) | $450–$900 | 40–70 years | Premium |
| Clay / Concrete tile | $500–$1,100 | 50–100 years | Premium |
| Natural slate | $800–$1,600 | 75–150 years | Luxury |
Labor rates by region
| Region | Per square | Typical 20-square job |
|---|---|---|
| Southeast (AL, GA, SC, FL) | $350–$500 | $7,000–$10,000 |
| Midwest (OH, IN, MI, WI) | $400–$600 | $8,000–$12,000 |
| Northeast (MA, NY, NJ, CT) | $600–$900 | $12,000–$18,000 |
| West (CO, AZ, NV, UT) | $500–$750 | $10,000–$15,000 |
| Pacific (CA, OR, WA) | $650–$1,000 | $13,000–$20,000 |
After getting your cost estimate, the roof insulation calculator can help you add the cost of attic insulation upgrade to your total project budget. For tile roofs, combine this calculator with the roof tile calculator to get piece-count and material volume.
Frequently asked questions
How accurate is this roof cost calculator?
This calculator provides a budgeting range based on national average material and labor data from NRCA, Angi, and Forbes Home for 2026. It is accurate to within 15 to 25 percent of actual contractor quotes in most US markets. Use it to sanity-check quotes and understand the major cost components, not as a substitute for an in-person estimate.
What is included in the cost per square for labor?
Labor per square includes on-roof installation time, safety equipment (harnesses, jacks, toe-boards), sheathing nailing, ridge cap and starter strip installation, and job site cleanup. It does not include decking replacement, chimney flashing repair, skylight re-flashing, or gutter work — these are billed separately as discovered items.
How much does a second layer of shingles add to tear-off cost?
A second existing layer adds $50 to $100 per square on top of the base tear-off rate. For a 20-square roof, a two-layer tear-off adds $1,000 to $2,000. This is because the combined weight requires larger dumpsters, takes longer to strip, and creates more landfill weight fees. Most states prohibit a third layer regardless of permit status.
When is the cheapest time to replace a roof?
Late winter and early spring (February through April) typically offer the most competitive pricing as contractors seek work before the busy storm-recovery and summer season. Avoid October and November in storm-prone regions — emergency demand peaks and prices spike 20 to 40 percent above normal.
Should I get a permit for a roof replacement?
Most jurisdictions require a permit for a full tear-off replacement. Permits cost $100 to $500 and require an inspection after installation. Licensed contractors typically pull permits as part of the job. Re-roofing without a permit can void home insurance coverage and creates problems at resale. Always confirm local requirements before accepting a no-permit bid.
Does my homeowner's insurance cover roof replacement?
Insurance covers sudden and accidental damage — hail, wind, falling trees. It does not cover replacement due to age, wear, or neglect. Most policies pay actual cash value (depreciated) rather than replacement cost unless you have a replacement cost endorsement. Always file a claim and get a public adjuster estimate before signing a contractor agreement after storm damage.
What is the cost difference between architectural and 3-tab shingles?
Architectural shingles cost $50 to $70 more per square than 3-tab but last 25 to 50 years versus 15 to 25 years. The lifetime cost per year is typically lower for architectural shingles. Most insurers in hail-prone states offer reduced premiums for Class 4 impact-resistant architectural shingles, which can offset the additional upfront cost within 5 to 7 years.
References
National Roofing Contractors Association. (2026). NRCA Roofing Cost Survey and Industry Benchmarks. NRCA.
Angi Research Team. (2026). Roof Replacement Cost Data. Angi. angi.com
Forbes Home. (2026). Roof Replacement Cost Guide. Forbes Media. forbes.com