Fannie Mae Selling Guide B4-1.1-06: Uniform Appraisal Dataset (UAD) and the Uniform Collateral Data Portal (UCDP)
This topic contains information on the Uniform Appraisal Dataset and the Uniform Collateral Data Portal, including:
Fannie Mae publishes the full text of this section: Fannie Mae Single Family Selling Guide on the Fannie Mae website. Zeitro Strata answers questions about it with the passage and page cited.
What this section covers
- Uniform Appraisal Dataset (UAD)
- Uniform Collateral Data Portal (UCDP)
- Uniform Appraisal Dataset (UAD) 3.6 Policy
Guideline text quoted as published by the agency. The latest published version governs. This is not an underwriting decision.

