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The data available from RealtyTrac is complex, so we've included a bit more information to make it accessible. Additionally, you should refer to the RealtyTrac Data Dictionary for definitions and information about the individual fields within the data.
It is possible that individual properties would be listed in multiple files. For instance, a property that was foreclosed upon in 2009 would appear in the NYUForclosure file but would also appear in the NYUSales file if it had later experienced a change in ownership. The properties in these files inherently reflect foreclosure, sale, and loan transactions; however, they are tied to a unique, discrete parcel. To marry the separate transaction files by parcel, it is best to refer to the RealtyTrac property ID field, which is a unique identifier for all tax parcels assigned by RealtyTrac. Users will also want to do this to enrich data on foreclosed properties with variables present on the Tax Assessor file.