Property data source APIs: coverage, freshness, and limits

Know your data sources.

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 September 9, 2026. That is when this list was last rebuilt from the ParcelOps source registry, not when each publisher last refreshed its own data.

tag: public-land

Louisiana State Lands No auth
A clearly labeled October 25, 2023 snapshot of Louisiana state-owned land tracts.
public-land louisiana state-land property geojson
3 methodsFreshness not declared
North Dakota Trust Surface Lands No auth
North Dakota trust-land surface agricultural leases and public-access attributes.
public-land north-dakota surface-leases trust-land geojson
1 methodFreshness not declared
US Forest Service Boundaries No auth
Check one point against the current source-specific Forest Service Basic Ownership layer.
usfs national-forest public-land ownership-boundary land
2 methodsScheduled