Public real estate data

To help you get started, we've compiled a variety of datasets and APIs from which to gain inspiration. Many of these datasets have already been cleaned and normalized, so they are ready to be explored using AI tools. The use of these datasets is often intended for research purposes only. If you want to use the data in your startup, be sure to read any associated license agreements to understand if there are commercial restrictions. Also note that you are not restricted to basing your idea on the data sets below. You may discover other open source data sets that inspire your creativity or you may bring your own proprietary data sets if you wish.

And if there’s a data set you think we should add to the list, please send it to us.

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  1. Categories of data
  2. Data sources: most well-known
  3. Real estate related APIs
  4. Hidden gems

Data categories

1. Property Listings Data:  - Description: Data on properties available for sale or rent, including property details (e.g., address, size, amenities), listing price, and contact information for sellers or real estate agents.  - Source: Online real estate portals, multiple listing services (MLS), and real estate agency websites.

2. Transaction Data:  - Description: Information on completed real estate transactions, including sale prices, dates of sale, and property details. Transaction data provides insights into property values and market activity.  - Source: Public property records, county assessor's offices, and real estate transaction databases.

3. Market Trends and Analytics:  - Description: Data and analytics on real estate market trends, home price indices, housing market reports, and supply-demand dynamics.  - Source: Real estate research firms, government agencies, and industry associations.

4. Mortgage Data:  - Description: Information related to mortgage rates, loan originations, mortgage delinquencies, and mortgage affordability.  - Source: Mortgage lenders, financial institutions, and government agencies.

5. Property Valuation Data:  - Description: Data and estimates of property values, including automated valuation models (AVMs) and property appraisal reports.  - Source: Real estate valuation websites, appraisal companies, and data providers.

6. Foreclosure Data:  - Description: Data on properties in foreclosure, including foreclosure notices, auction dates, and bank-owned properties (REOs).  - Source: Public records, foreclosure listing websites, and data providers.

7. Geospatial and Neighborhood Data:  - Description: Data on neighborhood characteristics, school districts, crime rates, proximity to amenities, and geographic information related to properties.  - Source: Geographic information systems (GIS), government databases, and real estate data platforms.

8. Demographic Data:  - Description: Information on population, household demographics, income levels, and demographic trends within specific areas.  - Source: Census data, government statistics, and demographic research firms.

9. Construction and Development Data:  - Description: Data on building permits, construction activity, new housing starts, and development projects.  - Source: Local building departments, construction industry reports, and government agencies.

10. Real Estate Investment Data:   - Description: Data on real estate investment trends, return on investment (ROI), cap rates, and rental market analysis.   - Source: Real estate investment platforms, investment analysis tools, and research reports.

Data sources: most well-known

1. Zillow Research:   Description: Zillow Research offers a wealth of data and reports on real estate trends, housing market analysis, home values, rental data, and economic insights. - Website:

2. Redfin Data Center:   Description: Redfin Data Center provides real estate data, market reports, and analysis on home prices, sales, inventory, and other housing market indicators. - Website:

3. Market Data:   Description: provides housing market insights, trends, and statistics on home sales, median prices, inventory, and housing affordability.- Website:

4. National Association of Realtors (NAR) Research:   Description: NAR Research offers reports, data, and insights on residential and commercial real estate markets, home sales, and demographic trends. - Website:

5. U.S. Census Bureau - Housing Data:   Description: The U.S. Census Bureau provides housing-related data, including homeownership rates, housing vacancies, building permits, and housing characteristics. - Website:

6. Federal Housing Finance Agency (FHFA) House Price Index (HPI):   Description: FHFA's House Price Index tracks changes in home prices at various geographic levels, providing data on housing market appreciation and depreciation. - Website:

7. Freddie Mac House Price Index (FMHPI):   Description: Freddie Mac's House Price Index tracks housing price changes at the national, state, and metro area levels over time. - Website:

8. U.S. Department of Housing and Urban Development (HUD) Data and Research:   Description: HUD offers various data and research resources on affordable housing, housing market analysis, and housing policy. - Website:

9. CoreLogic MarketTrends:   Description: CoreLogic MarketTrends provides real estate market data, home price insights, and housing market analysis for U.S. metro areas.  - Website:

10. Open Data Portals (Various cities and municipalities):    Description: Many cities and municipalities have open data portals that provide public datasets related to real estate, including property assessments, tax records, and building permits. Search for the open data portal of the specific city or region you are interested in.

11. Zillow Rent Index, 2010 - present:    Description: The Zillow Rent Index is the median estimated monthly rental price for a given area, and covers multifamily, single family, condominium, and cooperative homes in Zillow’s database, regardless of whether they are currently listed for rent. It is expressed in dollars and is seasonally adjusted. The Zillow Rent Index is published at the national, state, metro, county, city, neighborhood, and zip code levels.  - Website:

12. US Census Bureau (New Residential Sales) - Website:

13. House Sales in King County, USA    Description: This dataset contains house sale prices for King County, which includes Seattle. It includes homes sold between May 2014 and May 2015. - Website:

14. AirBnB Data - Website:

15. Trulia:    Description: Provides property listings, neighborhood information, and real estate trends.- Website:

16. MLS (Multiple Listing Service):   Description: Local databases used by real estate agents to share property information  - Website: n/a

17. PropertyShark:    Description: Provides property data, ownership information, and market analytics.  - Website:

18. OpenDataPhilly:    Description: Philadelphia's open data portal with real estate and property information. - Website:

19. UK Land Registry:    Description: Provides data on property transactions and ownership in the UK.  - Website:

20. Canada Mortgage and Housing Corporation (CMHC):    Description: Offers data on the Canadian housing market. - Website:

21. Australian Property Monitors:    Description: Provides real estate data and property insights in Australia.  - Website:

22. Rightmove:    Description: One of the UK's largest property portals with extensive real estate data.  - Website:

23. Zoopla:    Description: Offers property listings, house prices, and market trends in the UK. - Website:

24. Domain:    Description: Provides real estate listings and market data in Australia. - Website:

25. Real Estate Board of New York (REBNY):    Description: Publishes real estate market reports for New York City. - Website:

26. Realtors Property Resource (RPR):    Description: A NAR database with property data and analytics for Realtors. - Website:

27. National Multi Housing Council (NMHC):    Description: Offers data and research on the apartment industry. - Website:

28. S&P CoreLogic Case-Shiller Indices:    Description: Tracks home price changes in major U.S. metropolitan areas.  - Website:

29. U.S. Census Bureau's Building Permits Survey:    Description: Tracks building permits and housing starts. - Website:

30. National Council of Real Estate Investment Fiduciaries (NCREIF):    Description: Offers commercial real estate investment data  - Website:

31. LoopNet:    Description: Focuses on commercial real estate listings and market information. - Website:

32. Global Property Guide:    Description: Provides real estate data and property market insights from various countries. - Website:

Real estate related APIs

1. Zillow API:   - Data Offered: Zillow API provides access to real estate data, including property listings, home values, rental estimates, and property details.   - Use Cases: Developers can use this API to integrate Zillow's real estate data into applications, display property listings, and provide property valuation estimates. - Website:

2. API:   - Data Offered: API offers real estate data, property listings, neighborhood details, and market trends.   - Use Cases: Developers can use this API to display real-time property listings, provide neighborhood information, and access real estate market statistics.  - Website:

3. Redfin API:   - Data Offered: Redfin API provides access to real estate data, property listings, home values, and agent information.   - Use Cases: Developers can use this API to display property listings, access property details, and retrieve agent contact information. - Website:

4. Trulia API:   - Data Offered: Trulia API offers real estate data, property listings, neighborhood insights, and crime statistics.   - Use Cases: Developers can use this API to display property listings, provide neighborhood information, and show crime data for specific locations.  - Website:

5. MLS (Multiple Listing Service) API:   - Data Offered: MLS APIs provide access to real estate data from multiple listing services, including property listings, property details, and historical sales data.   - Use Cases: Developers can use this API to integrate real estate listings from multiple sources and provide comprehensive property information.  - Website: *Note: MLS APIs are specific to regional or local MLS providers, and the URL will vary based on the MLS service provider.*

6. Google Maps Geocoding API:   - Data Offered: Google Maps Geocoding API allows geocoding and reverse geocoding, enabling developers to convert addresses into geographic coordinates and vice versa.   - Use Cases: Developers can use this API to display property locations on maps and provide location-based services for real estate applications. - Website:

7. Walk Score API:   - Data Offered: Walk Score API provides walkability scores for addresses, indicating the ease of walking to nearby amenities.   - Use Cases: Developers can use this API to display walkability scores and proximity to amenities for property listings.   - Website:

8. FRED (Federal Reserve Economic Data) API:   - Data Offered: FRED API offers economic data, including housing market indicators, mortgage rates, and home price indices.   - Use Cases: Developers can use this API to access economic data relevant to the real estate market for analysis and research.   - Website:

Hidden gems

1. Home Mortgage Disclosure Act (HMDA) Data:   Description: HMDA data includes detailed information on mortgage applications, loan originations, and loan purchases. It provides insights into lending practices and mortgage market trends.       - Website:

2. Real Estate Transaction Standard (RETS):   Description: RETS is a data standard used by some real estate associations to share property listing data. It offers a standardized way for developers to access real estate information.       - Website:

3. Attom Data Solutions:   Description: Attom Data Solutions provides comprehensive real estate data, including property details, sales history, foreclosure information, and neighborhood data.       - Website:

4. Real Estate Data APIs by Estated:   Description: Estated offers APIs that provide property data, ownership information, and property boundaries, enabling developers to integrate real estate data into applications.       - Website:

5. PolicyMap:   Description: PolicyMap is a data and mapping platform that offers real estate data, including property values, housing market data, and demographic information.       - Website:

6. Real Estate Data by HouseCanary:   Description: HouseCanary provides real estate data, market forecasts, and property insights, helping users make informed decisions in the real estate market.       - Website:

7. Real Estate Analytics and Visualization by NeighborhoodX:   Description: NeighborhoodX offers analytics and visualizations that help users explore real estate data at the neighborhood level, including property values and trends.       - Website:

8. Real Estate Transaction Data by RealtyTrac:   Description: RealtyTrac provides data on foreclosure properties, auction sales, and bank-owned homes, offering insights into distressed property markets.       - Website:

9.   Description: is a marketplace for buying and selling distressed properties, foreclosures, and bank-owned homes, providing data on auction sales.       - Website:

10. Real Estate Data by GeoData Plus:    Description: GeoData Plus offers real estate data and property records, including building permits, tax assessments, and neighborhood data.        - Website:

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