Nationwide Real Estate & Property Data Solutions
Data engineered for modern workflows.
The Warren Group delivers comprehensive nationwide property, deed, and mortgage data — backed by decades of expertise and built for the speed and scale today’s data work demands. Whether you need a licensed feed, a custom-built dataset, or a real-time API, our four solution pillars give you the foundation to build with confidence: Our Data, Data Licensing, Data Services, and the Property Data API.
150+ years of property data expertise
Coverage across all 50 states
Continuously refreshed records
Modern, AI-ready data infrastructure
Our Data
Comprehensive nationwide property, deed, mortgage, and tax records — continuously refreshed, standardized, and engineered for accuracy.
We aggregate authoritative property data from jurisdictions across all 50 states, then standardize and enhance it through a combination of automation and expert review. The result is a clean, consistent dataset that’s ready to power everything from analytics dashboards to AI models – without the cleanup many teams have come to expect.
Our Data:
- Deeds and ownership records
- Mortgages and refinancings
- Tax assessments and valuations
- Building permit and land parcel data
- Foreclosures and distressed transactions
- Liens and encumbrances
- Rental data in major MSAs
- Full property transaction history
Built on automated quality controls and AI-ready standardization, our data is structured for modern workflows from day one.
Data Licensing
License nationwide property and mortgage data in the formats and refresh cadence your stack requires.
Our licensing model puts authoritative property records in your hands – your way. Choose bulk file delivery, SFTP, or custom feeds tailored to your schema and refresh schedule. Build analytics, power applications, enrich existing datasets, or train models on a foundation you can trust.
Engineered for modern data pipelines, automation, and AI/ML workloads, Warren Group licensed data integrates cleanly into the platforms your team already uses – so you spend less time wrangling data and more time building with it.
Data Collection Services
End-to-end real estate data collection, cleansing, and enrichment — engineered to give you a single, reliable source of truth.
Data Acquisition
Capture property data from county parcel sites, MLS databases, listing sites, auction sites, regulatory portals, and proprietary sources using scheduled crawlers and custom tools.
Data Cleansing & Enrichment
Resolve inconsistencies, remove duplicates, standardize formats, and append contextual data to deepen every record.
Data Validation & Verification
Verify property characteristics, sales history, ownership details, and contact information against authoritative sources.
Parcel Mapping
Capture, validate, and index land parcel records, integrated with GIS spatial data for a complete geographic picture.
Powered by automation, advanced algorithms, and expert human review — built for fast, secure delivery of time-critical property information.
Get the data you need, when you need it. Our Property Data API delivers on-demand access to authoritative property, ownership, and transaction records through clean, well-documented REST endpoints. Authenticate, query, and integrate in minutes — with a sandbox environment for testing and full documentation for your team.
Built for modern applications, automation, and AI agents that need authoritative property data on demand, the Property Data API is the fastest way to embed property intelligence into the products you build.
Ready to put nationwide property data to work?
From licensed feeds to custom data services to a real-time API, The Warren Group has the property data infrastructure your team needs to move faster.
Contact Us
For more than 150 years, The Warren Group has collected, standardized, and analyzed real estate transactions, mortgage records, and property ownership data. Our long-standing data expertise ensures accuracy, depth, and reliability for organizations that depend on high-quality real estate information.