The Industry’s Leading Real Estate Data API
ATTOM’s Property Data API gives you instant access to one of the nation’s most comprehensive real estate datasets, covering more than 158 million U.S. properties in one easy-to-integrate platform.
Access Data On:
- Ownership
- Valuations
- Boundaries
- Market Trends & Analytics
- Mortgage
- Demographics
- Contact Information
- And More
Award-Winning Innovation
Explore ATTOM’s Most Popular Property Data APIs
Access the industry’s most comprehensive real estate data through ATTOM’s suite of APIs.
Parcel Boundary API
Access parcel shapes, boundaries, and lot dimensions for mapping and land analysis.
Property Records API
Retrieve detailed property data including ownership, tax, assessment, and transaction history.
IDX API
Integrate MLS listing data with ATTOM’s nationwide property and neighborhood insights.
Real Estate API
Access comprehensive real estate datasets covering valuations, sales, and market trends.
Home Value Estimator API
Generate accurate, automated valuations with ATTOM’s AVM technology.
Parcel Data API
Get standardized parcel-level attributes across 155 million U.S. properties.
Mortgage Rates API
Display current mortgage rate trends by state, metro, or county.
Property Data API
The central API for access to ATTOM’s full property database and related datasets.
Why Developers Choose ATTOM APIs
- Nationwide coverage across 158+ million properties
- Clean, normalized data ready for immediate integration
- Flexible pricing and volume-based usage
- Cloud-hosted with fast response times and strong uptime
- Easy onboarding and developer-friendly documentation
- Scalable data to support real estate, mortgage, and insurance solutions
The API is easy to work with and, whenever there is an issue, ATTOM’s customer service is great…We’re even looking at purchasing additional types of data from them.”
—Max Nilsson
General Manager, AgentFire
How it Works
Create your account.
Determine your endpoints.
Make an API call
Comprehensive Endpoints for All Your Data Needs
ATTOM’s property data API endpoints provide robust and comprehensive access to a wealth of property, community, consumer, and financial data, empowering users with reliable and actionable insights. While the list below showcases many key endpoints, it’s not exhaustive—there’s even more to explore to meet your unique data needs.
- Addresses
- Legal Descriptions
- Square Footage
- Lot Size
- Zoning
- Property Characteristics
- Borrower Details
- Sales Price
- Mortgage History
- Transfers
- NMLS IDs
- Mortgage Assignments
- Sales Trends
- Housing Inventory
- Foreclosure Activity
- Rentals
- Home Affordability
- Vacancy Rates
- iBuyer Activity
- Comps
- Home Equity
- Rental AVM
- AVMs
- Tax Values
- Hail Index
- Tornado Index
- Radon
- Wind Index
- Clandestine Drug Labs
- Flood
- Drought
- Wildfire Risk
- Storm
- Heat
- Foreclosure Filing
- Default Amount
- Lender Name
- Auction Date
- Neighborhood
- Residential
- School
- Building Footprints
- Parcel
- School Districts
- School Profiles
- School Test Scores
- School Ratings
- Points of Interest
- Demographics
- Crime
- Transportation Noise
- Unemployment Rates
Leading Media Outlets Turn to ATTOM for Trusted Data
