Redfin Data Center vs ATTOM Property API for AI agents
Redfin's Data Center offers downloadable US housing market statistics; Redfin publishes no listings API. ATTOM Property API is a REST API for US property records: ownership, sales history, valuations (AVM and rental AVM), mortgages, schools, crime and neighborhood data.
The short answer
- Redfin Data Center: Free-to-download market trend data (prices, inventory, delistings) for research and charts, not finding a specific home.
- ATTOM Property API: Deep public-record and valuation data on any US property, rather than finding homes currently on the market.
Side by side
| Redfin Data Center | ATTOM Property API | |
|---|---|---|
| Searches | Market-level series such as the Housing Market Tracker (weekly and monthly), Redfin Home Price Index, price drops, delistings and investor purchases; not individual homes. | Properties by address, parcel number, ATTOM ID or latitude/longitude; the docs describe last sales, sales history and valuations, not active for-sale or rental listings. |
| Returns | Download files where each row is one region for one time period. | JSON or XML property records with characteristics, ownership, sale history, AVM values and area data. |
| Before the first call | Nothing stated; the data is a download button on the page. | A trial sign-up to receive an API key; production plans through ATTOM. |
| Free | – | 30-day free trial with an API key. |
| Acting on a result | Nothing: the downloads are aggregate statistics with no listings or contacts. | Nothing: no agent, landlord or listing contact fields are described. |
| Limits on keeping or showing results | Redfin's terms forbid automated crawling or querying of the site and copying or redistributing MLS listing information. | Use of data is governed by a separate license agreement that is not published on the site. |
| AI in its terms | No AI rule; the only AI mention is an MLS (BAREIS) disclaimer that listing material may have been generated by AI. | Not stated on its pages |
| Coverage | US | US, 160+ million properties. |
| MCP server | – | ATTOM MCP Server (access arranged through ATTOM): https://www.attomdata.com/solutions/delivery/mcp-server/ |
Where Openpath fits
Openpath has no homes listed yet. Owners and landlords can list a home for rent or sale on Openpath today, free, and agents will find it through the same search as jobs and businesses. Get listed.
Questions people ask
What do I need before I can use ATTOM Property API?
A trial sign-up to receive an API key; production plans through ATTOM.
Is ATTOM Property API free?
30-day free trial with an API key.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Redfin Data Center, read on October 15, 2026:
- redfin.com/news/data-center: “Downloadable housing market insights from across the U.S.”
- redfin.com/news/data-center/downloads: “Each row represents one region for one time period.”
- redfin.com/about/terms-of-use: “automatedly crawl or query the Services for any purpose or by any means”
- redfin.com/about/terms-of-use: “You will not copy, redistribute, or retransmit any of the information provided”
- redfin.com/about/terms-of-use: “may include such material that has been generated by use of artificial intelligence”
ATTOM Property API, read on October 15, 2026:
- attomdata.com/solutions/property-data-api: “Sign up for a free 30-day trial to receive an API key and explore ATTOM’s extensive property data”
- attomdata.com/solutions/property-data-api: “Covering 160+ million U.S. properties and 99% of the U.S. population”
- attomdata.com/solutions/property-data-api: “ownership information, lat/long, square footage, loan types, sales history, sales comps, crime, schools and more”
- api.developer.attomdata.com/docs: “return information pertaining to the most recent sale of a property or list of properties”
- attomdata.com/solutions/property-data-api: “The ATTOM MCP Server provides AI-native access to ATTOM Intelligence through the Model Context Protocol (MCP).”
- attomdata.com/solutions/delivery/mcp-server/how-it-works: “Access is governed, permissioned, and centrally managed”
- attomdata.com/terms-of-use: “subject to the terms of a separate license agreement”