Roof Cost Calculator
Estimate asphalt-shingle roof replacement cost from actual roof area and project scope, or use your own supported local rates.
Updated August 2026
Calculate roof square footage if needed.
Known decking and fees
No state wage adjustment applied. Select a state for a labor-adjusted estimate.
National planning estimate
How much does a roof replacement cost?
For a 2,000 sq ft roof with architectural shingles and one layer of old roofing removed, the national calculator estimates about $11,000 to $17,200, with a typical estimate of $14,000.
No hidden decking repair or additional fees are included. Select your state above for a labor-adjusted estimate.
This is a budgeting estimate, not a contractor quote.
Roof replacement cost by roof size
These national examples use architectural shingles with one layer of tear-off, no known decking replacement, and no additional entered fees.
Roof area means the actual sloped roofing surface, not the home's floor area. A 2,000 sq ft house does not necessarily have a 2,000 sq ft roof. Stories, overhangs, and roof slope change the amount of roofing surface. Use the Roof Square Footage Calculator to estimate the roof itself.
| Actual roof area | Roofing squares | Low | Typical | High |
|---|---|---|---|---|
| 1,000 sq ft | 10 | $5,500 | $7,000 | $8,600 |
| 1,500 sq ft | 15 | $8,250 | $10,500 | $12,900 |
| 2,000 sq ft | 20 | $11,000 | $14,000 | $17,200 |
| 2,500 sq ft | 25 | $13,750 | $17,500 | $21,500 |
| 3,000 sq ft | 30 | $16,500 | $21,000 | $25,800 |
One roofing square equals 100 sq ft of roof surface. Real contractor prices do not always scale perfectly with area because roof shape, access, penetrations, hidden repairs, minimum charges, and local project conditions can change the final quote.
What this roof cost calculator estimates
Guided Estimate gives low, typical, and high budget estimates based on your roof area, shingle tier, project type, removal scope, selected state, and any known costs you enter. Local Rates builds a point estimate entirely from your own installed and removal prices.
- 01Confirm actual roof area
Use sloped surface area, not house floor area or only the horizontal footprint.
- 02Define the project
Select project type, asphalt-shingle tier, removal, state, and any known costs.
- 03Compare the estimates
Review what is included and what a contractor still needs to confirm.
Actual roof area comes first
Cost calculations should begin with actual sloped roof area. Use the Roof Square Footage Calculator if you have footprint dimensions and pitch. The cost page accepts that result through ?areaSqFt= and does not apply pitch again.
If pitch is unknown, use the Roof Pitch Calculator first. A roofing square equals 100 square feet of roof surface.
Known scope and unknown conditions
- Included when supported
- Base installed asphalt roofing, one-layer tear-off, state labor localization, known decking, permits, tax, and labeled fixed costs.
- Not inferred
- A contractor accounting split, concealed damage, extra removal layers, minimum charges, or difficulty coefficients.
What base installed roofing means
The installed roofing allowance covers more than field shingles alone. Contractor proposals may also include underlayment, starter shingles, ridge caps, drip edge, flashing, fasteners, required membranes, ventilation, and normal cutting or waste.
Exact scope varies by roof and contractor, so compare the written inclusions before treating two prices as equivalent.
Why a state estimate may differ
The national estimate applies no state wage adjustment. When you select a state, BLS roofer wage data adjusts part of the installed roofing allowance.
Tear-off, decking, permits, taxes, and entered fees are not state-adjusted.
The 60% value is only used for state localization. It is not a claim that every roofing contract is 60% labor and 40% materials.
Cost data and methodology
Updated August 2026. Guided estimates use current published asphalt-shingle market references, with public roofing records used as a separate reasonableness check. May 2025 BLS roofer wages adjust part of the installed roofing allowance for the selected state. Tear-off, decking, permits, taxes, and entered fees stay separate.
Technical calculation details
Roofing squares
actual roof area ÷ 100
State adjustment
0.40 + 0.60 × state wage index
Installed roofing
area × tier rate × state adjustment
Total
installed roofing + removal + entered costs
What changes roof replacement cost
- 01Actual roof area and shingles: more sloped surface means more roofing, while 3-tab, architectural, and premium products carry different installed allowances.
- 02Removal and decking: tear-off adds removal and disposal; hidden deck damage may remain unknown until the old covering is removed.
- 03Roof shape: pitch, valleys, dormers, penetrations, and intersections can increase cutting, flashing, staging, and labor.
- 04Height, access, and location: handling conditions and local labor markets can change a contractor quote.
What the calculator does not price automatically
Roof pitch, shape, penetrations, building height, and access can change a contractor quote. The calculator does not assign automatic surcharges for those conditions because they require project-specific review.
Hidden decking repairs, minimum charges, and any permit, tax, or fee you do not enter also remain outside the estimate.
Replacement, new installation, and roof-over scope
A roof replacement may require crews to remove and dispose of the existing covering before installing the new asphalt-shingle system. New installation assumes a prepared roof deck and does not include tear-off.
A roof-over or overlay places new covering over an existing layer. Do not assume that approach is permitted or suitable. Existing layer count, adopted code, deck condition, roof geometry, and product instructions can control whether an overlay is allowed.
Cost and shingle quantity are different
This calculator applies installed rates to actual roof surface area. It does not add a generic material-waste percentage or convert coverage into packages.
Use the Shingle Calculator for product coverage, material waste, roofing squares, and whole-bundle rounding. Keep that purchase quantity separate from the installed-cost estimates shown here.
Compare contractor proposals by scope
Contractors may organize proposals differently, so compare the work described rather than matching line-item names. Confirm these details before comparing totals:
| Check | What to confirm |
|---|---|
| Measurement and product | Actual roof area or roofing squares, exact shingle product and tier, and the quantity basis used. |
| Removal and disposal | Existing layer count, tear-off scope, hauling, disposal, and any conditions that change the price. |
| Roof-system components | Underlayment, required membranes, starter shingles, hip and ridge caps, drip edge, flashing, ventilation, and fasteners. |
| Deck and hidden damage | Included decking or sheathing, allowances, unit rates, and approval process for concealed repairs. |
| Fees and protections | Permits, inspections, applicable taxes, warranty scope, exclusions, and other owner responsibilities. |
Technical references
Commercial pricing evidence remains documented in the internal methodology. The public reference below supports the state wage adjustment.
- U.S. Bureau of Labor StatisticsMay 2025 State Occupational Employment and Wage EstimatesOfficial state and national median hourly wages for Roofers (SOC 47-2181), used only to adjust part of the installed roofing allowance.
Roof cost calculator questions
How do I estimate roof replacement cost?
Start with actual sloped roof area, select the asphalt-shingle tier and replacement scope, then review the low, typical, and high planning scenarios. Add known decking and fees only when you can support them.
What does Local Rates mean?
Local Rates means every price comes from you, such as a contractor proposal, supplier quote, or locally supported installed rate. Roof Calculator Hub performs the arithmetic but does not validate the entered prices.
What is the difference between cost per square foot and cost per roofing square?
A roofing square is 100 square feet of actual roof surface. Cost per square foot divides the total by roof area; cost per roofing square divides the same total by the number of roofing squares.
Does this roof cost calculator include tear-off?
Guided replacement mode can price one existing layer from the approved tear-off planning range. If you select two or more layers, the calculator still prices only the first and flags additional removal as unresolved. Local Rates uses only the tear-off rate and layer count you enter.
Does the estimate include hidden roof decking damage?
Only known decking sheets and a rate you enter are included. Concealed deterioration may not be visible until the existing roof covering is removed, so unknown decking remains outside the total.
Are the low, typical, and high results contractor quotes?
No. They are budgeting estimates based on current published market references and checked against public roofing records. A contractor still needs to inspect the roof and confirm the project scope.