Find a building
Building outlines come from OpenStreetMap. Addresses are resolved with Google Geocoding.
Or tap a real building — no key needed:
Math check
The four sample buildings from the spec, computed here in the browser. The expected values are the spec's own.
| Building | Floors | Got | Expect |
|---|
3-minute rule: ft reach = ft/sec × sec ÷ path factor. Coverage sketch only — final placement needs a site walk.