Roof Replacement Cost Calculator
This free roof replacement cost estimator prices roofing, tear-off, decking repair and flashing line by line from your roof size and material. Adjusted for your state.
- Prices reviewed September 2026
- Adjusted for all 50 states
- No sign-up to see your number
Step 1 of 4
Your roof
Size, height and steepness.
Labor costs differ a lot by state. This adjusts every line.
Roof area is bigger than the floor plan. Multiply your home’s footprint by about 1.25 if you are unsure.
Height of the house
Roof pitch (steepness)
Estimated roof cost
$15,700
$10,000 – $21,400
How we calculate your roof replacement cost
We price the project line by line: demolition, cabinetry or fixtures, finishes, labor, permits, and a contingency buffer. Every line has its own low and high unit price, so the range you see comes from real spread in the market, not a flat percentage. Labor is then adjusted by state, and materials move far less by location than labor does.
Unit prices are national benchmark ranges last reviewed September 2026. Treat the result as a planning number for setting a budget and judging contractor bids. It is not a quote. Read our full methodology.
What a roof replacement estimate includes
- Roofing material and installation
- Tear-off and disposal (optional)
- Flashing, vents and drip edge
- Decking repair and upgraded underlayment (optional)
- Permit (optional) and contingency
What the roof replacement estimate leaves out
- Gutter replacement
- Structural or rafter repair
- Solar panel removal and reinstall
- Insurance claim adjustments
Roof replacement cost FAQs
How much does a new roof cost?
A typical asphalt roof runs roughly $9,000 to $20,000. Metal, tile and slate cost more, and steep or multi-story roofs add labor.
Does the estimate include tear-off and disposal?
Yes, when the tear-off option is on, which is the default. Removing the old layers is a real cost that some quotes list separately.
Is underlayment included?
Standard underlayment is part of the roofing line. Ice and water shield or upgraded underlayment is an optional add-on in the last step.
What is the surprise cost on a roof?
Rotted decking. You often cannot see it until the old roof is off, so we include an optional decking repair line and a contingency buffer.
How often should I replace my roof?
Asphalt lasts roughly 20-30 years, metal 40-70, tile and slate longer. Climate, ventilation and installation quality matter as much as material.
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