ATTOM Data Solutions

Comprehensive real estate data API provider with 158+ million property records, offering property, tax, deed, mortgage, valuation, and market analytics data.

Data, Analytics & ResearchFreemium158M+ properties • 99% US coverage

Get Started with ATTOM Data Solutions

Overview

ATTOM Data Solutions is the nation's leading provider of comprehensive real estate data, offering access to over 158 million property records covering 99% of the U.S. population. With 70 billion rows of data and 9,000+ attributes per property, ATTOM provides the most extensive property intelligence available. Their Property API platform delivers real-time access to critical property information including ownership details, transaction history, valuations (AVM), tax assessments, liens, foreclosures, building permits, hazard data, neighborhood analytics, and market trends. The platform supports both JSON and XML formats with REST API conventions, allowing you to query properties by address, APN, ATTOM ID, or coordinates. Whether you're building a real estate application, conducting market analysis, or need reliable property data for your business, ATTOM provides enterprise-grade data solutions with flexible pricing and packaging options.

Real-World Example

TechHome, a proptech startup in Austin, integrated ATTOM's API to power their property valuation platform. Using ATTOM's AVM data, tax records, and transaction history, they built an automated property analysis tool that serves 5,000+ real estate agents with instant market valuations, comps, and investment metrics - saving agents hours of manual research per listing.

Pros & Cons

Pros

Most comprehensive US property database with 158M+ records
9,000+ data attributes per property for deep insights
Free API trial available to test before committing
Flexible API supporting JSON/XML with multiple query methods
Enterprise-grade reliability covering 99% of US population
Extensive data types: tax, deed, mortgage, valuation, hazard, schools

Cons

Custom pricing may be expensive for small businesses
Can be overwhelming for users who only need basic property data
API integration requires technical development expertise
Learning curve to fully utilize all 9,000+ data attributes

Best For

Real estate tech companies, brokerages, investors, lenders, appraisers, and data analysts who need enterprise-level property data and APIs. Perfect for building real estate applications, conducting market research, or integrating property data into existing systems.