Detailed Property Data Glossary

Sales history data is all the transactions relevant for a piece of property derived from recorded sales deeds and loan data. Anyone who needs to research, prove ownership, or file a transfer or transaction for a specific property. Dataset includes a complete sales history of a property going back to 1988.

Sales trends are aggregated from the zip code and city-level down to subdivisions and neighborhoods. The data is updated monthly, quarterly or annually.

A property set for foreclosure auction with a publicly posted sale date, typically after a Notice of Sale.

A data schema defines the structure, organization, and relationships of data, including fields, data types, and formats. It ensures consistency across datasets and enables efficient integration, querying, and use in analytics and AI-driven applications.

ATTOM's nationwide school data spans private and public schools (K-12), school districts, colleges, and universities.

School attendance zones are the geographic areas surrounding a school within which students need to live. ATTOM's comprehensive data on school attendance zones is derived from GIS data, map images, and school address lists.

Students are required to live within school boundaries in order to attend the school in question. ATTOM provides the largest database on school boundaries, covering 67,274 school boundaries.

School district boundaries refer to the geographical districts served by certain schools. ATTOM covers school district boundaries for the whole of the U.S., covering 13,462 district boundaries.

A search method that understands the meaning and context of words instead of matching exact keywords, helping users discover more relevant information.

Loan to value ratio of 125 percent or above, meaning the property owner owed at least 25 percent more than the estimated market value of the property

A sale of a property where the sale price is less than (short) the combined amount of loans secured by the property.