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: buildings

PNNL Data Center Atlas No auth
Open existing US data-center locations, buildings, and campuses plus 2035 scenarios.
pnnl doe data-centers inventory buildings
3 methodsScheduled
USACE National Structure Inventory No auth
Nationwide modeled building characteristics. Implemented; activation awaits a verified API smoke test.
usace structures buildings occupancy replacement-cost
2 methodsScheduled
Worldwide Building & Structure Footprints No auth
Buildings, addresses, and how land is used, anywhere in the world, from OpenStreetMap.
buildings addresses land-use openstreetmap global
4 methodsNear real-time