ATTOM Data

quote-required; self-serve free-trial API key Win & Set Up the Work

US property data warehouse spanning 160M+ properties (~20TB) with ownership, tax, deed, mortgage, foreclosure, AVM, hazard, and boundary attributes. Delivered via a REST Property Data API (developer portal), bulk file licensing, cloud data shares (Snowflake/Databricks), and an AI-native MCP server. A self-serve free-trial API key with Postman collections eases developer onboarding; full licensing is quote-based.

Hidden Pricing

3.8 /5 composite score

Address-to-property data layer -- a REST Property Data API plus an MCP server and cloud shares (Snowflake/Databricks) return ownership, tax, deed, AVM, and hazard attributes as JSON/XML; the MCP server and self-serve trial key make it agent-accessible, though full licensing is quote-based with no public price sheet (RF1).

Solid

Rubric Scorecard

How we grade →

Criterion	Score	Evidence
Value for the price	2/5	quote-required; self-serve free-trial API key
Agent Friendliness	5/5	MCP, API: REST Property Data API at api.developer.attomdata.com; bulk files and Snowflake/Databricks shares Source →
Ease of adoption	4/5	--
Portability & lock-in	4/5	2 file formats
Interoperability	4/5	2 integrations

Pricing

Modelquote-required; self-serve free-trial API key

Free tierno

Free viewerno

Trialyes

Visit ATTOM Data →

How we verified this: we checked ATTOM Data against its live site and an independent source — crunchbase.com. Nothing on this page is listed from memory. See how we grade. Verified 2026-07-19.

Evidence

File formats

Format	Direction	Support
JSON	export	full -- Property Data API.
XML	export	full

Integrations

Snowflake (api-only) Databricks (api-only)

Sources

API docs

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