There is no platform for land data. There are counties.

Almog, what's the best platform for researching land before you buy? There is no platform. There are counties. That is the honest answer, not a dodge. Land records are held county by county. Commercial sites repackage the same records, and they inherit the same lag and the same typos. So what do I actually open? Five free sources, in this order, and about an afternoon of your time. The county assessor. The recorder. The FEMA flood map. Satellite imagery. And the recorded bill of assurance for the addition. Get the parcel number first, because everything else is downstream of it. If a seller can't give you one, you already learned something.