{"id":569,"slug":"attom-500m-transactions-2690-counties","title":"ATTOM Data: 500M+ real estate/loan transactions, 2,690+ counties, 20-step Enterprise Data Management Program","kind":"reference","scope":"business","status":"current","audiences":["claude-code","candid-team"],"topics":["open-data","data-infrastructure"],"reference_body":"**Claim:** ATTOM warehouses *\"more than 500 million real estate and loan transactions in over 2,690 counties\"*, normalized via a **20-step Enterprise Data Management Program**. Coverage: 99% of the U.S. population across 3,000+ counties; **70 billion+ rows; 9,000+ discrete attributes**.\n\n**Sources:**\n- <https://www.attomdata.com/data/transactions-mortgage-data/recorder-data/>\n- <https://www.attomdata.com/data/>\n\n**Confidence:** Verified.\n\n**ATTOM customers** (Roofstock, Offerpad, HomeFinder) build downstream products on the normalized public-records base. The persistent ATTOM ID across datasets is the entity-resolution moat — every property gets one canonical identifier whether the source spelled the address differently in two counties.\n\n**The ATTOM 20-step EDMP is the canonical demonstration that the moat is the pipeline, not the records.** Every business in the US has equal legal access to the same county assessor data. ATTOM's value is what happens between download and queryable.","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"zillow-built-on-administrative-data-backbone","title":"Zillow: 110M-home \"living database\" built on Census/ACS + 3,000 county assessors + USPS + MLS feeds","kind":"reference","scope":"business","link_type":"relates-to"}],"incoming":[{"slug":"cherre-property-knowledge-graph-3-3t-aum","title":"Cherre: property knowledge graph powering management of $3.3T AUM globally","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"local-logic-100b-data-points-canadian","title":"Local Logic (Montreal): 100B+ data points — \"largest location dataset in real estate\"","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"research-brief-public-data-private-moat","title":"Research brief: Public data as a private moat — building proprietary intelligence from government open data (piece 11 of 15)","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-05-22T20:32:45.211Z","updated_at":"2026-05-22T20:32:45.211Z"}