ATTOM vs CoreLogic

Nationwide property data API — 160M+ US properties, ownership, sales, valuation, hazard data

Built for proptech companies, lenders, and data-hungry underwriting teams that need bulk API access to property, ownership, sales, and hazard data across the full 160M+ US property universe — this is infrastructure, not an end-user tool. Strong coverage breadth is the draw. It's enterprise-priced and requires engineering resources to integrate meaningfully, so a small brokerage or single-fund acquisitions team looking for a point-and-click comp tool should look elsewhere; ATTOM is for teams building on top of the data, not browsing it.

Property data and analytics (Spatial Web Services API) for underwriting, valuation, and hazard risk

Built for lenders, insurers, and underwriting teams that need property, valuation, and hazard-risk data via API at scale — CoreLogic's Spatial Web Services is genuinely deep, particularly for flood/wildfire/climate risk layered onto property records. This is enterprise data infrastructure requiring integration work, not a browsable tool, so a small acquisitions team wanting quick one-off property lookups will find it disproportionate; that use case is better served by a lighter, self-serve data API.