Whether you’re a property investor or a real estate agent, property value estimates are likely a key part of your day-to-day business as a real estate professional. As such, you may already use an Automated Valuation Model to estimate property values. However, with various options at your fingertips you want to make sure you understand how an AVM can help you and who the best providers are.
What exactly is an Automated Valuation Model in relation to real estate? A real estate Automated Valuation Model (AVM) refers to a solution that utilizes machine learning to analyze a range of data points to provide a value estimate for a specific property.
The data analyzed typically includes property characteristics, comparable sale prices, property market trends, the age of the property and more. In this post, we contrast and compare the most well-known AVM providers on the market.
The Best AVMs in Real Estate
Below, we explore a selection of the top AVM real estate providers. Let’s take a look.
ATTOM’s AVM
ATTOM’s high-powered AVM is fueled by ATTOM’s nationwide residential property and sales database. ATTOM’s AVM offers property valuations on over 98 million homes in every U.S. state, covering 99% of the American population.
ATTOM estimates AVM values by combining comprehensive historical data with AI-driven modeling. The system cleans and validates raw property data, adjusts historical prices to current market conditions using hyperlocal price indices, and applies multiple machine learning models that are blended dynamically to produce each valuation. Comparing ATTOM’s property estimates to sale prices, their median absolute error is 2.7%.
Zillow’s Zestimate
Zillow’s Zestimate is one of the most widely recognized automated valuation models, used by millions of consumers and real estate professionals to estimate home values across the U.S. Launched in 2006, it was among the first AVMs made broadly available to the public.
Zillow reports a nationwide median error rate of approximately 1.9% for on-market homes and 6.9% for off-market properties, reflecting the inherent challenges of valuing homes without recent transaction data. The Zestimate incorporates a wide range of inputs, including public records, MLS data, and user-submitted updates, with accuracy varying based on data availability and local market conditions.
CoreLogic (Cotality) Total Home Value
CoreLogic’s (now Cotality) Total Home Value is an enterprise-grade automated valuation model designed to deliver consistent property valuations across the entire loan lifecycle, from marketing and origination to risk management and portfolio monitoring.
The model leverages CoreLogic’s extensive property and MLS datasets, along with robust historical records, and applies AI and machine learning within a cloud-based architecture to generate valuations at scale. Unlike many AVMs that use multiple models for different use cases, Total Home Value is built on a single-model methodology that is tuned for various applications, helping ensure consistency across workflows.
The platform also incorporates risk and hazard insights into its valuations, allowing users to better assess properties in higher-risk areas. It is commonly used by lenders, insurers, and investors for underwriting, risk assessment, and portfolio analysis.
Realtor.com AVM
Realtor.com offers a consumer-facing home value experience that aggregates estimates from multiple AVM providers. Rather than relying on a single model, the platform presents a range of valuations, often including low, median, and high estimates, based on inputs such as property characteristics, local market trends, and third-party AVM data.
This approach is designed to give users a broader view of potential property value, particularly in cases where estimates may vary due to differing methodologies or data inputs.
The Top Real Estate AVM Providers
There are a wide variety of Real Estate AVM providers to choose from. The right one for you will depend on whether you’re in the real-estate profession or simply curious about a property currently on the market.
Curious to learn more about ATTOM’s AVM? Download our comprehensive white paper.
