Built on official records
Every report is built on your city's official zoning records and county assessor data. We translate dense code into plain English and cite each answer back to its source, so you can verify it.
About
Most homes can be more than they are.
Underbuilt reads the rules that govern your property: your city's official zoning records and county data, then turns them into one clear answer: what you can actually build. No planning meetings, no decoding ordinances, no guesswork.
Backed by Breezy
Underbuilt is built by Breezy Technologies, a team making property and zoning data understandable for ordinary homeowners, not just developers and architects.
Who's behind it
James Harris
James writes Underbuilt's guides on building, design, and the zoning rules that decide what's possible on a lot.
More about James →