Authenticate to the Estated API using your API key in the query string parameter as documented in the Estated v4 API reference
Call the property detail endpoint with the subject property address to retrieve the standardized address, APN, and the current owner of record fields
Access the deeds array within the property response, which provides up to 40 years of deed records including grantee name, grantor name, document type, sale price, mortgage amount, and recording date
Filter deed records by document_type to distinguish arms-length sales from intra-family transfers, refinances, and foreclosure deeds, which have different implications for title research
Cross-reference the owner of record name in the current ownership object against the most recent deed grantee to detect potential ownership gaps that may indicate a title issue
Note that Estated infrastructure is being migrated to ATTOM; verify with the current Estated documentation whether the v4 API endpoint remains active or has been redirected to an ATTOM endpoint
Known gotchas
Estated merged into ATTOM Data in 2024-2025; existing API keys remain valid but new feature development is on the ATTOM platform—check current Estated documentation for any deprecated endpoint notices before building new integrations
Sale prices in deed records are frequently missing or show nominal transfer amounts (e.g., $1, $10) for intra-family transfers, estate transfers, and foreclosure deeds; do not use deed price fields as a reliable source of market value without validating document type first
County assessor data freshness varies widely; Estated aggregates assessor data on varying refresh schedules by county, and some rural counties update only annually—query the metadata fields for data_source and last_update to understand staleness before acting on the data
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp