ATTOM Launches AI Based Property Valuation Model Covering 98 Million Homes

May 05, 2026
ATTOM introduced a new AI powered automated valuation model built on 30 years of property data, achieving a 2.9 percent median error across 98 million US properties.

ATTOM has launched an automated valuation model built on three decades of property data and artificial intelligence, announced in a press release. The model covers 98 million US properties and reports a 2.9 percent median absolute percentage error in testing.

The valuation system is designed to overcome the limitations of traditional comparable sales models by learning from 30 years of time adjusted transaction history. It analyzes property characteristics, historical pricing, and local market trends to produce valuations even in markets with limited sales data.

Each valuation includes a confidence score that measures reliability. The model is available for use in mortgage, insurance, investment, and property technology applications. Delivery options include APIs, bulk data, and integration with cloud platforms such as Snowflake and Databricks.

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