Property Data Sources in California

Comprehensive property data API covering 158M+ properties.

ATTOM's Property Data API provides access to real estate datasets for over 158 million U.S. properties. It offers data on ownership, valuations, mortgage, demographics, and market trends.

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.

Auction.com is an online marketplace for foreclosure and bank-owned real estate auctions.

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.

CIMLS.com is a commercial real estate listing service that provides property marketing, data, and listing management services.

California property tax assessment data from county assessors.

ClearAVM is an automated valuation model (AVM) that provides property valuations. It is designed for use by investors, lenders, and regulators.

Comprehensive commercial real estate data and analytics.

Nationwide commercial real estate listings and market data for office, industrial, retail, and coworking spaces.

CompStak One is a platform for commercial real estate data, providing lease comps, sale comps, loan data, property data, and analytics.

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

Enterprise property data API with comprehensive coverage.

Cotality provides real estate property data and analytics, offering insights into the property ecosystem. It harmonizes technology, data, and expertise to deliver a rich view of property information.

Crexi is a commercial real estate platform offering nationwide listings for sale, lease, and auction with property data and comps.

Crime and sex offender incident data from participating law enforcement agencies with location-based search and email alerts.

Parcel-level ownership, deed, and recorded document data for 150M+ US properties via web platform and API.

DealGround provides commercial real estate data with 62M+ properties, including tenant info, transaction history, and ownership contacts.

Dwellsy is a rental housing platform that lists apartments, houses, townhouses, condos, and mobile homes for rent.

Federal Land Records provides access to federal land conveyance records, including historical documents and current interactive mapping tools.

First American provides title insurance and settlement services for residential, commercial, and specialized real estate transactions.

ICE provides nationwide foreclosure data covering notices of default, trustees, auctions, and bank-owned properties across judicial and non-judicial states.

Foreclosure.com offers a database of 1.17M+ distressed property listings including preforeclosures, short sales, sheriff sales, auctions, and tax liens.

Goliath provides AI-driven lead generation and deal management for real estate operators, tracking homeowner signals and automating outreach.

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

HouseCanary provides property data, valuations, CMAs, market forecasts, and AI-driven analytics for real estate professionals.

Hubzu is an online auction platform listing bank-owned, foreclosure, residential, and commercial properties for bidding and purchase.

ICE Mortgage Technology offers data and tools covering real estate listings, property records, valuations, and mortgage loan lifecycle management.

Official property assessment records for parcels in Los Angeles County.

Mashvisor provides data for short-term rental analysis and real estate investment opportunities. It offers tools for rental analysis and identifying investment properties.

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.

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

ATTOM's Neighborhood Data offers local area details including points of interest, crime stats, weather, unemployment rates, and transit routes by city and zip.

NeighborhoodScout delivers neighborhood-level crime, demographic, housing, school, and real estate trend data across the U.S. for investment and appraisal.

BatchData provides pre-foreclosure data, offering details from initial default notices to scheduled auction information.

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.

RESO-compliant real estate data including MLS, assessor, and deed data.

PropStream provides AI-enhanced real estate data and tools for real estate professionals. It supports lead generation, property evaluation, and marketing efforts.

Prospect by Buildout is an AI-based property and owner database that provides insights for residential and commercial properties.

PublicRecordsNow offers a people search engine with access to 120+ billion public records including contact info, criminal records, and background reports.

RealEstateAPI provides access to property records, MLS listings, and historical sales data. It offers advanced search capabilities and tools for portfolio management.

Listings and data on homes for sale, foreclosures, pre-foreclosures, bank-owned properties, and auctions nationwide via web platform.

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

Regrid provides parcel data with boundaries, buildings, addresses, and geographic enrichments. It unifies fragmented property records into a nationwide and globally expanding dataset.

Standardized parcel boundaries for 155M+ parcels nationwide.

RentCast provides real-time rental property data and market insights. It allows users to look up rent prices and track rental portfolios.

RentRange provides rental data solutions for real estate investment. It offers property reports, market metric reports, and investor lists.

Rental market data and automated valuations.

Rent estimates, rent comps, and historical rental trends for U.S. properties via web platform and CSV downloads.

Reonomy provides commercial real estate (CRE) property and ownership intelligence. It is designed to help users source new deals and identify off-market opportunities.

Parcel data covering over 99% of U.S. properties, updated daily, accessible via API, bulk download, and web platform.

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

Skip tracing services to find property owners nationwide via online search tools and bulk list processing.

Real-time US address autocomplete returning only verified USPS addresses with fuzzy matching and state/ZIP filtering.

Extract and verify US addresses embedded in unstructured text, HTML, or documents via a single API call.

Address enrichment API delivering 350+ property data points — structure, location, and financial attributes — for 210M+ US addresses.

Convert latitude/longitude coordinates into verified US street addresses via a simple REST API.

Rooftop-accurate geocoding API delivering precise latitude/longitude for 96% of US addresses, with parcel and ZIP+4 precision levels.

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

Tax Sale Resources provides tools for tax sale investment, including research, management, financing, and trade services.

TitleFlex is a solution for title companies that combines farm building, property profile generation, and customer service.

UrbanFootprint provides spatial data and analysis technology for resilience insights. It integrates urban, climate, and community factors to assess risk and market behavior.

Xome provides a platform for buying and selling real estate, including auction properties and traditional MLS listings. It offers tools for both homebuyers and real estate investors.

Online marketplace providing U.S. residential property listings with market insights and Automated Valuation Model.

Yardi Matrix provides market intelligence for commercial real estate. It offers analysis of current market conditions at micro and macro levels.

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