Knowledge
Each source has a page with its publisher, update schedule, coverage, known limits, and request fields. Coverage tells you where a source is available, not which fields a property will return. You can get the same details as JSON at /api/knowledge/data-sources.
Last verified . That is when this list was last rebuilt from the ParcelOps source registry, not when each publisher last refreshed its own data.
Assisted properties, expiring subsidy contracts, inspection scores, and FHA portfolio context.
Find local property datasets or search normalized permit, inspection, and violation events in five US markets.
