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.
Where a property sits relative to military installation, range, and training area boundaries, and whether foreign buyer rules attach to the site.
Retired and retiring power-plant land with grid, rail, port, parcel, and incentive context.
