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.
Official NMTC, CDFI Investment Area, and BEA tract or county screening.
Official annual LIHTC Qualified Census Tract and Difficult Development Area screening.
Point and small-area screening against official Rural Development program maps.
