Living area is useful context, but roofing contractors price the roof surface and scope. Pitch, overhangs, attached garages and roof geometry can make roof area larger or smaller than you expect.
Start with actual roof area
If you know the roof surface area, enter it in the Roof Replacement Cost Calculator. If you only know footprint dimensions, the Roof Pitch Calculator can help you understand how slope affects simple roof planes.
Material changes the planning range
Asphalt shingles, metal, tile, wood shake and slate have different material and installation assumptions. Compare scenarios before asking contractors to bid.
Tear-off and complexity matter
Removing existing roofing, hauling debris, steep slopes, multiple valleys and building height can change labor and access requirements.
Compare scope before price
Use the planning range as context, then follow the roofing quote comparison checklist so each proposal includes the same work.