Roof cost estimator
Use Lapeyre’s Austin or St. Louis planning ranges, or enter prices from your own written estimates. Start with measured roof area and compare matching scopes.
A two-story home’s living area is not its roof area. Use a roof measurement report.
Include only items outside the unit price. Unconfirmed hidden damage remains unknown.
Your planning range
$11,000.00–$14,500.00
Measured roof area × the unit-price range, with any project minimum applied, plus $0.00 in separate allowances.
This is a calculation using the selected inputs, not a binding Lapeyre quote. Do not add waste to the area if your installed unit price already includes material waste.
Project minimum before separate allowances: $8,000.00. Preliminary planning configuration; inspection and an itemized proposal establish the actual scope and price. Source: austin-2026-08-25. Configuration date: 2026-08-25.
Where the planning prices come from
Austin and St. Louis presets reuse Lapeyre’s existing planning configuration, dated August 25, 2026. They are not an average of completed jobs or a binding proposal. New Orleans does not have a verified preset here; select “My written estimates” to enter quoted prices.
The calculation
Low total = roof area × low installed price per square foot + separate allowances. High total uses the high installed price with the same area and allowances. For a Lapeyre preset, the project minimum applies before separate allowances are added. This measured-area tool does not estimate pitch from home size or round results to a thousand dollars. A price per roofing square covers 100 square feet; divide it by 100 before entering it here.
Worked example with hypothetical inputs
For arithmetic only, suppose an estimate used $6–$8 per square foot on a 2,000-square-foot roof, plus $500 of separately priced work. The range would be $12,500–$16,500. These are invented demonstration inputs, not Lapeyre prices or a market benchmark.
Make the scopes comparable
- Confirm the same roof covering and installation system.
- Check removal layers, disposal, underlayment, flashing, ventilation, labor, and permit treatment.
- Ask for a unit price and approval process for decking found damaged after removal.
- List difficult access, steep sections, and optional upgrades explicitly rather than adding an unexplained multiplier.
An installed price commonly accounts for material quantities as part of its scope. Do not multiply the full labor-and-material estimate by a waste factor unless the quote specifically requires that adjustment.
Why measurements matter
A roof report measures the sloped surface and separate sections. Interior living area may include multiple floors. Verify the measured area before comparing a quote’s price per square.
Plan your next step
Use these tools to prepare questions and compare scopes. An inspection establishes the condition and measurements of your actual roof.