The Uniform Appraisal Dataset (UAD) Appraisal-Level Public Use File (PUF) is the nation’s first publicly available appraisal-level dataset of appraisal records, giving the public new access to a selected set of data fields found in appraisal reports. The UAD Appraisal-Level PUF is based on a five percent nationally representative random sample of appraisals for single-family mortgages acquired by the Enterprises. The current release includes appraisals from 2013 through 2021. The UAD Appraisal-Level PUF is a resource for users capable of using statistical software to extract and analyze data. Users can download annual or combined files in CSV, R, SAS and Stata formats. All files are zipped for ease with download.

The UAD Appraisal-Level PUF provides the public and policymakers with meaningful data about appraisals to identify trends, conduct research, promote compliance, and address potential discriminatory patterns. Public, transparent data about appraisals promotes a liquid, efficient, competitive, and resilient national housing market.

​Version 1.1 (4/12/2024)

Version 1.1 of UAD PUF updates approximately 5 percent of the PUF records where coverage for the Number of Comps Used data field (field name: number_comparables) has been expanded to include all comparable properties instead of only those with proper geocodes. This aligns the UAD PUF with the corresponding data field reported in the UAD Aggregate Statistics. Version 1.1 of the UAD PUF data dictionary has been updated with this information. This resulted in the recategorization of the bin in the Number of Comps Used data field from "1-3" to "3".

Version 1.1 of the UAD PUF Data Dictionary has been also updated to clarify the Race and Ethnicity of Borrower(s) data field (field name: race_ethnicity). This data field represents the race and ethnicity of borrower(s). For purchase mortgages, it is the race and ethnicity of the buyer(s), not sellers. For refinance mortgages, it is the race and ethnicity of the owners who are refinancing.

In addition, datasets in RDS format have been added to supplement the RDATA format. Missing values for data fields in RDATA format have been recoded from "NA" to NA for ease of use. In addition, 13 data fields were converted from integer type to double type in both RDS and RDATA format files for ease of use.

​Documentation

UAD PUF Dat​a Dictionary Version 1.1 (4/12/2024)

UAD PUF Version History Version 1.1 (4/12/2024)

UAD PUF D​ata Documentation (10/16/2023)