Open / Free Data

Resources and tools supporting flood resilience and adaptation policy at local, state, and federal levels.

Federal infrastructure permitting and environmental review data for large projects via an online dashboard and API.

National housing data including household characteristics and housing quality via Public Use Files and an online table creator.

Apartment List Research provides original research, analysis, and data on the U.S. rental market. It offers insights into rental trends and housing market dynamics.

The FDIC provides searchable databases for information on specific banks, their branches, and the banking industry. It offers various reports and data sets related to financial institutions.

California property tax assessment data from county assessors.

Detailed demographic, social, and economic data via API.

Geographic boundaries and features for all US census geography.

Property tax assessment data including actual values, assessment rates, and taxing entities for Colorado properties.

Credit risk data on $2.3T single-family mortgage loans retained by Fannie Mae, accessible via Data Dynamics platform.

Official property assessment data for parcels in Cook County, Illinois.

Official property tax assessment records from county assessor offices nationwide.

Official deed and document records from county recorder offices.

The LA County eGIS Program provides geospatial data and technology to support Los Angeles County's vision.

Open access to Los Angeles County data on homelessness, justice, sustainability, poverty, child protection, and more via web platform.

Access 531,820 open datasets from U.S. federal agencies via searchable catalog for research, app development, and visualization.

Data.gov catalogs US government datasets tagged with LIHTC, including formats like JSON, XML, CSV, and HTML.

Dateno provides access to over 22 million open datasets globally. It offers both manual data search and API integration for data extraction.

Environmental data on toxic releases, Superfund sites, water and air quality via EPA API and bulk downloads nationwide.

Official flood hazard maps showing Special Flood Hazard Areas, flood zones, and base flood elevations nationwide.

No accessible financial report data available from the FFIEC NPW Financial Report resource.

Official US single-family house price indices from FHFA available via bulk download and CSV.

API providing real-time data to identify if loans are owned by Fannie Mae for refinance and underwriting eligibility.

Federal Land Records provides access to federal land conveyance records, including historical documents and current interactive mapping tools.

Federal real property data including location, usage, and status for government-owned assets via bulk download.

Property-level physical climate risk data on flood, wildfire, and wind hazards via API and open data for real estate assets worldwide.

Flood hazard data providing insights on flood risk and flood zones across the US.

Assessment and property tax data from Florida county appraisers via online search interface.

Monthly house price indices at national, state, and metro levels from Freddie Mac.

Weekly average mortgage rates for 30-year and 15-year fixed loans across the US.

HUD-eGIS Storefront offers access to HUD's geospatial datasets, mapping tools, and APIs covering housing and urban development programs.

1–10 ratings for public schools based on student progress, test scores, and college readiness across all 50 US states and D.C.

Loan-level mortgage application and origination data reported by financial institutions nationwide.

Annual 40th percentile rental cost estimates by metro area and county for HUD housing programs via API and bulk download.

Housing data including Fair Market Rents, Income Limits, Public Housing, and Section 8 information nationwide.

The Housing Vacancies and Homeownership program provides current information on rental and homeowner vacancy rates. It also includes characteristics of units available for occupancy.

GIS maps and data layers for electoral districts, precincts, streets, and geographic boundaries in Los Angeles County.

GIS data for LA County unincorporated areas available for download and web use via ArcGIS services.

Official property assessment records for parcels in Los Angeles County.

Interactive map viewer displaying geographic, zoning, and climate risk data for Los Angeles County.

Public datasets on city finances, public safety, housing, infrastructure, and more for Los Angeles via web platform.

Real-time geospatial and city data for Los Angeles via Open Data Portal and GeoHub platforms.

Research and data on land use, taxation, and stewardship including manufactured housing and mobile home parks.

Official assessor records for taxable property in Maricopa County, Arizona.

Loan-level mortgage data for the U.S. market, available via API and bulk download with privacy protections.

NMLS Consumer Access is a free service for consumers to confirm that financial-services companies or professionals are authorized to conduct business in their state.

Coastal elevation, bathymetry, and topographic data for US coastal areas via bulk download.

Property tax, assessed values, tax class, exemptions, and parcel details for all New York City properties.

The Neighborhood Atlas hosts the Area Deprivation Index (ADI), a measure of neighborhood disadvantage used to evaluate factors impacting health across populations.

National and regional data on new privately-owned housing units authorized, started, under construction, and completed.

Geospatial datasets and mapping tools covering HUD programs including Opportunity Zones across the U.S.

This is an open data feature service providing parcel ownership information for the Town of West Springfield.

PolicyMap provides data and mapping tools for understanding communities and markets. It offers access to thousands of datasets for exploration, mapping, and analysis.

The Primary Mortgage Market Survey (PMMS) provides weekly U.S. mortgage rate averages. Results are based on mortgage rates collected from loan applications submitted to Freddie Mac.

Standardized data dictionary for MLS and property data interoperability across the US real estate industry.

Downloadable housing market data including median sale price, home sales, inventory, and days on market by metro, county, and zip code.

Downloadable weekly and monthly housing market data including home sales, prices, inventory, and market trends nationwide.

The Residential Energy Consumption Survey (RECS) provides data on household characteristics and energy usage for primary residences in the United States.

Climate-related risk data and tools to assess hazards like flooding, drought, and extreme weather for community resilience planning.

Open-access rural housing data including USDA rural development housing assets via web portal and API.

The State HFA Factbook compiles program activity data from state housing finance agencies (HFAs). It provides data on HFA program results and operations.

Property tax data including school district values, appraisal district info, and tax rates for properties across Texas.

Comprehensive demographic, housing, and economic data for all US areas.

Datasets on USDA Rural Development programs including single-family and multi-family housing, loan turn times, and resale properties.

Elevation, hydrography, transportation, boundary, and parcel data for the US via API and bulk download.

Flood risk data and flood insurance information based on official FEMA flood maps and guidelines.

Zillow Housing Data provides various metrics related to home values, forecasts, rentals, and sales. It includes data such as the Zillow Home Value Index (ZHVI) and Zillow Observed Rent Index (ZORI).

Rental market data including rent, search, and inventory insights for US and Canada via blog articles and reports.

Provides datasets and tools analyzing neighborhood conditions affecting child opportunity and racial/ethnic equity across U.S. communities.

Access to over 530,000 datasets including crime, flood, and social data from US government sources.