Roof Explorer

Enter an address to load its aerial history.

How this works

The dashed square is the area being analysed. Address lookups place a house by interpolating along the street, so it often starts on the lawn or the road — click your roof on the map to move it and re-run.

Imagery is USDA NAIP aerial survey data (0.3–1 m per pixel), flown over the continental US roughly every two years since 2003. Each capture is fetched at the identical footprint, so years can be compared pixel‑for‑pixel. Because flights are ~2 years apart, a replacement can only be narrowed to the window between two flights.