Average roof size and replacement cost in San Antonio, TX — measured from satellite

We used Microsoft's building footprint data, which is built from satellite and aerial pictures. It draws an outline around every building it can see, then measures the area inside that outline. We looked at every building whose outline falls inside the San Antonio area and found the middle (median) size.

A tape measure only covers one house at a time. Satellite pictures let us look at thousands of buildings at once, so we can show a real middle-of-the-road number for the whole city, not just a guess.

It is a ballpark, not a quote. We took the median roof size above and ran it through the same starting prices our instant quote tool uses before a roofer sets their own. Every roof is different, so treat this as a starting point.

The biggest things are size, material (asphalt shingles cost less than metal or tile), roof shape (a simple roof costs less to install than one with lots of angles), and how many layers of old roofing need to come off first.

Type your own address into the instant quote tool below. It measures your actual roof from satellite and gives you a price in about 30 seconds, before you talk to anyone.

A roofer puts this same instant quote tool on their own website. When a homeowner asks for a price, they see one right away instead of waiting for a callback, and the roofer gets the lead with the details already filled in.