RoofGenius

Roof Replacement Estimate by Address

How much will a new roof cost on your house? Type the address. We find the outline of the house on the map, work out the roof size from it, and show a price range for each roofing material. It is free and there is no sign-up.

1. Find your house

US addresses only. Include the city and state.

Pressing the button sends the address to RoofGenius and on to free public map lookups (OpenStreetMap and the U.S. Census Bureau) to find the house. We don't ask for your name, email or phone, and the address is not saved to any account.

2. Check the details

Ground area under the main roof, garage included
From your listing or tax record
Not sure? 6/12 is typical. How to find it
Set from the outline when you look up an address
Map outlines usually include part of the eaves already

An estimate, not a quote. The range comes from national 2026 installed-cost data and a roof size worked out from a map outline or your numbers. Local labor rates, the roof's real pitch and shape, decking repairs, permits and access can push a real bid above or below it. Get written quotes from licensed, insured local roofers before you decide.

How the estimate works

  1. Find the house. The address is matched with OpenStreetMap's Nominatim search and the U.S. Census Bureau geocoder. Then we read the building outlines around that point from OpenStreetMap map data and pick the one that carries your house number, or the one at the address point, or the nearest house-sized building. The outline is drawn so you can check it, and you can tap a different building if we picked the wrong one.
  2. Measure the footprint. The outline's area and perimeter are calculated on the ground in square feet. Map outlines are mostly traced from aerial photos, which show the roof edge, so they already include much of the overhang; the tool adds a half-foot allowance by default (a full foot when you enter living area, which is measured at the walls).
  3. Turn the footprint into roof area. A sloped roof has more surface than the ground it covers. Multiplying by the pitch multiplier gives the true area, which is divided by 100 to get roofing squares.
  4. Price it. The roof area is multiplied by the installed cost per square foot for each material, with the same complexity, steepness and tear-off adjustments as the roof replacement cost estimator.
Plan area = footprint + perimeter × overhang + 4 × overhang² Roof area = plan area × pitch multiplier (6/12 = 1.118) Squares = roof area ÷ 100 Order = squares × (1 + waste) gable 10%, hip 15%, cut up 20% Price = roof area × installed $/sq ft × complexity × steepness From living area: footprint = living area ÷ stories + garage (1-car 280, 2-car 480, 3-car 700 sq ft)

Worked example

1,900 sq ft one-story ranch with a two-car garage, 6/12 gable roof, 1 ft overhang. Footprint = 1,900 + 480 = 2,380 sq ft. The perimeter of that footprint as a 1.6:1 rectangle is about 201 ft, so the eaves add 205 sq ft for a plan area of 2,585 sq ft. × 1.118 = 2,890 sq ft, or 28.9 squares (32.0 to order with 10% waste). Architectural shingles: $11,600 to $26,000. Standing-seam metal: $28,900 to $52,000.

What the map can't see

  • Pitch. A flat map outline has no slope. If you don't know your pitch, compare photos on the roof pitch examples page. Going from 4/12 to 8/12 adds about 14% to the roof area.
  • Porches and additions. If a covered porch or a newer addition is missing from the outline, switch to "House footprint I enter" and add it.
  • Several buildings in one outline. Townhouses and row houses are often mapped as one long building. Enter your own unit's footprint instead.
  • Missing houses. OpenStreetMap is built by volunteers and some newer subdivisions and rural areas aren't mapped yet. The tool then falls back to living area and stories, which you can find on your listing or county tax record.

Sources

Installed-cost ranges by material are the same 2026 figures used on the roof replacement cost estimator, where every source is listed. Building outlines and house numbers: © OpenStreetMap contributors (ODbL), served as vector tiles by OpenFreeMap (OpenMapTiles schema). Address search: Nominatim and the U.S. Census Bureau Geocoder. Garage sizes are typical plan areas (RoofGenius planning assumption).

Frequently asked questions

How much will my roof cost?

It depends mostly on the roof's size and the material. For a typical 2,000 sq ft roof, architectural shingles run about $8,000 to $18,000 installed and standing-seam metal about $20,000 to $36,000, based on published 2026 national ranges. Type your address above to size your own roof.

Can I get a roof replacement estimate by address?

Yes, as a planning range. This tool reads your house outline from OpenStreetMap, works out the roof area from it and your pitch, and prices it by material. Roofers measure the real roof (often from aerial reports) before they quote.

How accurate is a roof size from a map?

The footprint is usually within a few percent when the house is mapped well. The bigger unknowns are the pitch and the overhang, so check those two settings. If the outline looks wrong, enter your own footprint.

How many squares is my roof?

Divide the roof area in square feet by 100. A 1,900 sq ft one-story house with a two-car garage and a 6/12 roof is usually about 27 to 30 squares, before waste.

Is this a quote?

No. It is an estimate from national averages. Get at least three written quotes from licensed, insured local contractors, and compare the squares and scope they list.

Do you store my address or contact me?

No. There is no sign-up and we never ask for your name, email or phone. The address is only used to look up the house outline.