ATTOM is the premier U.S. provider of property and real estate intelligence, with coverage of more than 160 million U.S. properties spanning property characteristics, ownership and mortgage records, assessment and tax history, sales transactions, AVM valuations (current and historical), rental AVM, home equity, building permits, pre-foreclosure status, school assignments, transportation noise, area boundaries, points of interest, and neighborhood community profiles. Founded 1996, headquartered in Irvine, CA. ATTOM also offers bulk file licensing and AI-native cloud delivery via Snowflake, Databricks, and the ATTOM MCP Server.
URL: Visit APIs.json
Run: Capabilities Using Naftiko
Real Estate, Property Data, Property Intelligence, Mortgage, Assessment, AVM, Foreclosure, Transactions, Owner Data, Building Permits, Geospatial, Boundaries, Demographics, Neighborhood, POI, Insurance, Mortgage Technology, PropTech
- Created: 2026-05-25
- Modified: 2026-05-25
Comprehensive property intelligence for 160M+ U.S. properties. Resources cover /property, /assessment, /assessmenthistory, /sale, /saleshistory, /salescomparables, /attomavm, /avm, /avmhistory, /rentalavm, /homeequity, /allevents, /school, /transportationnoise, /preforeclosure, and /property/buildingpermits, each available in snapshot and detail packages. Inputs include AttomID, address, address1/address2, and geographic radius/bounding box.
Human URL: https://api.developer.attomdata.com/docs
- OpenAPI
- JSON Schema — Property
- JSON Schema — Assessment
- JSON Schema — Sale
- JSON Schema — AVM
- JSON-LD Context
- Naftiko Capability — Property
- Naftiko Capability — Assessment
- Naftiko Capability — Sale
- Naftiko Capability — AVM
- Naftiko Capability — All Events
- Naftiko Capability — School
- Naftiko Capability — Building Permits
- Example — Property Detail
- Postman Collection
Area and boundary lookup for U.S. states, counties, CBSAs, neighborhoods, ZIPs, and school zones. Resolve a lat/lon to its geographic hierarchy, fetch GeoJSON boundary polygons, and resolve any v4 geoID.
Human URL: https://api.developer.attomdata.com/docs
Points of interest across 120+ business categories. Search by point (lat/lon + radius) or by address; filter by category, line of business, and industry.
Human URL: https://api.developer.attomdata.com/docs
Neighborhood community profiles — demographics, household income, crime indices, weather, commute, and quality-of-life metrics — addressed by geoIdV4.
Human URL: https://api.developer.attomdata.com/docs
Mapbox-style vector tiles of U.S. parcel boundaries for rendering parcels on web and mobile maps.
Human URL: https://api.developer.attomdata.com/docs
All ATTOM APIs authenticate via the apikey request header. Self-serve a free 30-day trial key at the ATTOM Developer Platform; production keys are issued under an annual API subscription.
ATTOM maintains language-specific sample code on GitHub under the AttomDataSolutions org:
- Sample_Code — General property sample code (PHP)
- School_Sample_Code — School sample code (PHP)
- POI_Sample_Code — POI sample code (PHP)
- Community_Sample_Code — Community sample code (PHP)
- postman-collections — Pre-built Postman collections for the Property and Area APIs
- ATTOM Home
- Developer Platform
- API Documentation
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- Sign Up — Free 30-Day Trial
- Property Data API
- Bulk Data Licensing
- Cloud Delivery (Snowflake, Databricks, MCP)
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- Glossary
- Contact — datacustomercare@attomdata.com / 800.462.5125
- GitHub Org
- Kin Lane — kin@apievangelist.com — API Evangelist