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ATTOM AVM

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PlanBilled and limitsPrice
ATTOM AVMprice varies by solution and location coverage · broadest coverage offers the greatest discountOn request

As attomdata.com lists them, read 14 Nov 2026. The maker's own page has the final word.

Facts from ATTOM AVM's own pages

Access security
AI access through the MCP Server is centrally managed with authentication, permissions, logging, and usage monitoring. · attomdata.com, 14 Nov 2026
AI integration
The ATTOM MCP Server exposes schema-aware tools for ATTOM data, including AVMs, comps, and sales history. · attomdata.com, 14 Nov 2026
Appraisal limit
ATTOM says these estimates are not meant to replace appraisers, and most mortgage lenders still require an official appraisal before closing. · attomdata.com, 14 Nov 2026
Confidence score
A machine-learning uncertainty model assigns each property a confidence score from its location, characteristics, and historical performance. · attomdata.com, 14 Nov 2026
Delivery
The AVM is delivered through APIs, bulk delivery, and cloud platforms such as Snowflake and Databricks. · attomdata.com, 14 Nov 2026
Geographic coverage
ATTOM’s property database spans all 50 states and covers 99% of the U.S. population. · attomdata.com, 14 Nov 2026
Headquarters
Irvine, California, United States · attomdata.com, 19 Oct 2026
Model inputs
The AVM combines county assessor, county recorder, and MLS data, then blends multiple AI models based on the data available for each property. · attomdata.com, 14 Nov 2026
Property count
ATTOM describes the next-generation model as achieving a 2.9% median error across 98 million U.S. properties. · attomdata.com, 14 Nov 2026
Property types
AVM valuations are limited to single-family homes, condominiums, and townhouses. · attomdata.com, 14 Nov 2026
Reported accuracy
ATTOM says the AVM delivered a 2.9% median absolute percentage error, with more than 80% of valuations within 10% of the actual sale price. · attomdata.com, 14 Nov 2026
Result fields
Each completed valuation includes an estimated value, a confidence score, and a minimum and maximum potential value. · attomdata.com, 14 Nov 2026
Sales history
Census-block price indices adjust historical sales so the model can use up to 30 years of sales history. · attomdata.com, 14 Nov 2026
Update cadence
Valuations are calculated monthly and then packaged for customers on intervals that fit their use cases. · attomdata.com, 14 Nov 2026
What it does
An ATTOM AVM is an estimate of a property’s likely sale value under current market conditions. · attomdata.com, 14 Nov 2026
Who it is for
The AVM is built for enterprise use across mortgage, insurance, investment, and proptech applications. · attomdata.com, 14 Nov 2026

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