Base and multipliers
(Labor + material + disposal + tear-off × layers + underlayment) × roofing squares. Waste, pitch, complexity and story multipliers then apply.
Free roofing tool
Roof Replacement Cost Calculator
Build an early roof replacement range from the source’s visible size, material, pitch, complexity, tear-off and market assumptions. Edit the source price defaults when you have better project data.
Inputs
Set the project assumptions
The defaults come directly from the authoritative source and are not a live price feed.
Source pricing formula
Final range
Permit is added; overhead and profit, market and sales-tax factors apply; then the source ±15% default creates low and high values.
There is no external price feed. The displayed defaults are source assumptions, not a quote or market-average claim.
Replacement cost calculator FAQ
How accurate is this calculator?
It is an early planning range based on the visible source assumptions. It is not a bid, inspection or local price feed.
Why does pitch affect cost?
The source applies 1.0 low, 1.1 medium, 1.25 steep and 1.4 very-steep multipliers.
Are the source prices current market prices?
No current-market claim is made. They are source defaults recorded at migration and are editable before calculation.