Buildability- Regrid
- Commercial parcel data provider with national coverage of roughly 150 million U.S. parcels. Source of the `parcel` block in every Buildability Response — parcel geometry, owner, assessed value, lot size, zoning, APN, legal description. Refresh cadence varies by county from quarterly to annually.
- FEMA NFHL (National Flood Hazard Layer)
- The authoritative FEMA flood zone dataset, updated continuously as flood maps are revised. Source of the `flood` block in every Buildability Response — zone, SFHA flag, Base Flood Elevation when available, and FIRM panel number.
- USGS (U.S. Geological Survey)
- Federal agency and source for elevation (the National Elevation Dataset / 3DEP), earthquake hazard maps, landslide susceptibility, and topographic data. Feeds the `parcel.topography`, `earthquake`, and seismic risk fields of a Buildability Response.
- EPA Envirofacts
- The EPA's integrated environmental data portal combining Superfund (CERCLIS / SEMS), RCRA, Toxics Release Inventory (TRI), permitted dischargers (ICIS-NPDES), and drinking water systems. Buildability does not read it; a Phase I environmental site assessment covers contamination.
- USDA NRCS Soil Survey
- The USDA Natural Resources Conservation Service soil database covering every U.S. county. Source of `soil.drainage_class`, `soil.foundation_suitability`, and `soil.septic_suitability` in Buildability Reports. Drives septic feasibility screening for rural parcels and foundation-design risk flagging.
- NOAA (National Oceanic and Atmospheric Administration)
- Federal agency providing climate normals, extreme-weather records, hurricane tracks, severe storm reports, and drought monitoring. Feeds the `wildfire.risk_level` backfill when USFS data is unavailable and the long-range climate context in every Report's environmental narrative.
- HUD FMR (Fair Market Rent)
- HUD's Fair Market Rent dataset, published annually at the county and ZIP Code Tabulation Area (ZCTA) level. Buildability does not read it; rent estimates come from RentCast.
- Census ACS (American Community Survey)
- The U.S. Census Bureau's 5-year rolling demographic survey at the block-group and tract level. Source of `demographics.median_income`, `demographics.total_population`, `demographics.owner_occupied_pct`, and other neighborhood context in every Buildability Report.
- AirNow
- EPA's real-time air quality monitoring network. Buildability reads air quality from Open-Meteo, not AirNow. AQI bands: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+).
- USFS (U.S. Forest Service)
- The USDA Forest Service, source of wildfire hazard potential (WHP) maps and the national Forest Inventory and Analysis (FIA) program. Feeds `wildfire.risk_level` (low / moderate / high / very high / extreme) in every Buildability Response.
- Mapbox
- Commercial mapping and geocoding service. Buildability uses it as a second geocoder after the Census Bureau’s (a rooftop point when the Census point lands outside every parcel), and for the interactive parcel maps on buildability.us.
- RentCast
- Commercial provider of rental comparables, sales comps, and automated valuation estimates (AVMs) for U.S. single-family and small-multifamily properties. Source of the `value_estimate` and `rent_estimate` blocks in paid-tier Buildability Reports.
- OSM (OpenStreetMap)
- Crowd-sourced global geographic dataset. Buildability uses OSM as a utility-presence proxy (nearby water, sewer, gas, electric infrastructure), for street-type classification, and for amenity proximity (nearest school, hospital, grocery). Quality varies by geography — urban OSM coverage is excellent, rural is thinner.
See every term in action.
Score any U.S. address free and watch zoning, flood, environmental and entitlement terms become one number.
Free to score · No card, no signup · All 50 states