How ATTOM’s API Works
What is the ATTOM API?
The ATTOM real estate data API is a broad, open canvas for building resources and software for the real estate industry across an array of user spectrums. It’s ideal for mobile applications, reporting tools, coaching initiatives, website marketing and listing displays, as well as any other iteration of real estate content.
The ATTOM API is designed specifically to provide a horizon-spanning library of real estate insights. Combining ease of use and up-to-minute relevancy on 158 million+ properties across the United States, the ATTOM API is a long-trusted industry partner for developers, real estate professionals, financial analysts and more.
What Can the ATTOM API Do For You?
Our data warehouse is as broad as our clients need it to be, offering access to insights that affect 99% of the nation’s residents. School data? Parcel numbers? It’s there. Need to refocus your website on local properties? The ATTOM API is perfect for that. Mortgage data, property values, crime statistics, appraisal records, community demographics, sales histories—if it’s data to power a real estate business or that next industry-altering proptech, ATTOM has it.
Getting Started
Signing up is easy, and we allow for a 30-day trial to all of our ATTOM API tools.

Create your account.
Fill out this easy form and then look for an email from us with a link to activate your account and get started.

Determine your endpoints
Community, property, consumer, financial information and more—all clearly outlined for easy integration and fast retrieval.

Make an API call
The ATTOM API retrieves your data with simplicity and speed, enabling you to deliver your application or marketing content with ease.
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
Build a Smarter Real Estate Business
The ATTOM API is built for real estate data users to generate market intelligence every day. We are a real estate-driven company working to organize, empower and deliver information to help brokers, agents, technologists and finance professionals—anyone who touches real estate—make knowledgeable, profitable business decisions.