ATTOM™ AVM
Transparent. Confident. Accurate.Automated Valuation Models at Affordable Rates
Built on one of the industry’s most comprehensive property and sales databases, ATTOM delivers nationwide AVM coverage that reflects current market dynamics with precision and scale. Our AI-powered valuation framework combines advanced machine learning with high-quality property intelligence to produce reliable valuations at a price point aligned with your business objectives.
AVM results are available as stand-alone values or seamlessly integrated with other ATTOM datasets through match and append, bulk files, custom extracts, or API delivery.
The Property Data You Use Matters
ATTOM’s property database spans all 50 states and covers 99% of the U.S. population. Our AVM is built on a foundation of high-quality, multi-sourced data and an AI-driven valuation framework that emphasizes accuracy, transparency, and scale. Our property AVM:
Combines county assessor records, county recorder records, and MLS data into a comprehensive national dataset, then applies multiple AI-driven models that are blended dynamically based on the data available for each property.
Constructs hyperlocal price indices at the census block level to adjust historical transactions to current market conditions, allowing the model to learn from up to 30 years of sales history rather than just recent transactions.
Valuations are focused to only single-family homes, condominiums, and townhouses.
Rigorously cleans and validates raw property and transaction data, removing errors, implausible values, and non-arm’s-length transactions to ensure high-quality inputs drive every valuation.
Built-In AI Confidence Scoring
Every property receives a unique confidence score.
Our machine learning uncertainty model analyzes each property’s location, characteristics, and historical performance to predict property-specific valuation risk. This approach learns which factors are associated with higher or lower valuation precision, providing users with a clear measure of how much weight to place on a given valuation—supporting better, more informed decisions.
Enterprise-Grade AI Valuations You Can Trust
The ATTOM AVM is an enterprise-ready automated valuation solution built on advanced statistical modeling, machine learning, and one of the nation’s largest multi-sourced property databases. Designed for accuracy, scalability, and transparency, our AI-driven framework delivers consistent, explainable valuations that real estate professionals can rely on with confidence.
How Can You Use ATTOM’s AVM?
Real Estate Investments
Whether valuing one home or a portfolio of properties, real estate investment tools can now access estimated values, ranges, and confidence scores with enterprise-grade quality.
Real Estate Portals
Displaying the most accurate estimated home values, along with detailed property profile information, adds up to page content that drives more traffic and higher conversion rates.
Insurance
Calculating insurance quotes requires an accurate and current estimated value for the home in addition to the home profile, location, neighborhood and risk information.
Mortgage
Borrower pre-qualifications take many variables into consideration. The estimated market value for a home is a critical piece in determining borrower and lending program fit.
Appraisal Management Companies
For AMCs that create broker price opinions (BPOs), our AVM values deliver high-quality estimates and ranges with a confidence score that can be relied on for data driven business decisions.
Marketing
Create targeted prospect lists, where prospective market value is a key demographic filter. AVM values can also enrich all types of marketing collateral with recipient-relevant values.
ATTOM AVM White Paper – FREE
ATTOM provides transparency in its analytical process by offering a FREE detailed white paper, better explaining how the ATTOM AVM works. This white paper provides insights into the data sources, algorithms, and methodologies used to calculate property valuations.
The ATTOM AVM follows a three-stage framework: data cleaning and validation, time normalization using hyperlocal price indices, and value estimation using blended machine learning models. Each valuation includes a confidence score derived from empirical model performance and calibrated to capture the realized sale price.
Free
Webinar
Inside ATTOM’s Next-Generation AVM: AI, Confidence Scoring, and Property Intelligence
Listen in as Aaron Wagner, Head of Data Science at ATTOM, takes an inside look at ATTOM’s next-generation AI-powered AVM and how it is redefining modern property valuation.
Traditional AVMs rely heavily on recent comparable sales, which can limit accuracy in today’s low-transaction housing market. In this session, Aaron will walk through how ATTOM rebuilt its AVM from the ground up using advanced AI and more than 30 years of time-adjusted property intelligence to deliver scalable, transparent, and highly accurate valuations.
The webinar will also explore ATTOM’s confidence scoring framework and how organizations can use it to make better-informed underwriting, investment, and risk decisions.
High-Level Takeaways Include:
- Why traditional AVMs struggle in today’s housing market
- How ATTOM rebuilt its AVM using AI and 30+ years of property intelligence
- ATTOM’s accuracy benchmarks, confidence scoring, and valuation transparency
- Real-world applications across mortgage, insurance, proptech, and investment analytics
- How to access ATTOM AVMs through APIs, bulk delivery, Snowflake, and Databricks
- And more…
What is an AVM in real estate?
An AVM, or Automated Valuation Model, is an estimate of the likely sale value of a property given current market conditions. It uses a combination of property characteristics, sales data, geographical boundaries, price trends, assessor records, and other data points to produce a property’s estimated value in the current marketplace for any location across the U.S.
ATTOM’s AVM Insights
Related Data
A Variety of Solutions for Your Data Needs
Click here to get in touch with a data expert today and find out how your business can access ATTOM’s comprehensive property data via a variety of flexible formats, such as:
- Cloud Delivery
- ATTOM Nexus
- AI-Ready Solutions
- Property Data APIs
- Bulk Data Licensing
- Property Navigator
- Neighborhood Navigator
- Real Estate Market Reports
- Match & Append
Discover ATTOM and view our Table of Data Elements.