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.
Flood hazard maps from FEMA, for an early check on a US property.
County and census-tract screening across 18 natural hazards, vulnerability, and resilience.
Declared disasters, flood insurance claim patterns, and public aid data for US market research.
