- Parcel boundary dataNationwide parcel boundary data (API and vector tiles)Parcel boundaries (property lines) for 126M+ US parcels across 50 states and 2,377 counties, served as hosted Mapbox Vector Tiles and queryable by coordinate through REST, GraphQL and MCP.
- Tax assessor dataTax assessor data API for US propertiesQuery county tax assessor records through one API: assessed and market value, year built, building area, bedrooms and baths, land use, owner and mailing address, and last sale. Filter in bulk or look up one property.
- Property owner lookupProperty owner lookup APIFind who owns a US property by address or coordinates: owner names and mailing addresses from county records, renter-occupied signals, and bulk owner-name search through MCP, REST and GraphQL.
- Building permit dataBuilding permit data APIBuilding permits linked to US parcels: permit type, issue date, status, valuation, contractor and source link, from permit offices in 403 counties. Search properties with or without a permit since a date.
- Zoning dataZoning data API for US parcelsGet the zoning district of a US parcel: raw jurisdiction zone code, normalized category (single-family, multifamily, commercial, industrial...), overlays, and buildable-area screens like vacant, ADU-eligible and split potential.
- Building dataBuilding data API: footprints, heights, year built and codesBuilding-level data for US parcels: footprint polygons and heights, year built, building area, stories, permits and the adopted building code of the jurisdiction, through one API.
- Hail history dataProperty-level hail history APIHail history for any US property: every storm day radar-estimated hail fell on the parcel, with maximum estimated hail size, from NOAA MRMS MESH data. Search properties by hail size and date.
Which dataset answers which question?
| Question | Dataset | Credits |
|---|---|---|
| Where are the property lines? | Parcel boundaries | Tiles: free tier, then 1 per 1,000 |
| What is it worth, how big, how old? | Tax assessor data | 2 |
| Who owns it? | Property owner data | 1 |
| What work was permitted? | Building permits | 2 |
| What can be built there? | Zoning | 1 |
| What is on the lot? | Building data | 1 to 2 |
| Has hail hit it? | Hail history | 1 |