FHA will require the use
of the UAD language in their appraisals beginning in 2012. The
requirements apply only to the 1004 & 1073 forms. FHA will accept
UAD compliant appraisals prior to the effective date of 1/1/2012.
UAD Overview[PDF]
summarizes the UAD information, its components and its
intended use.
Field-Specific Standardization Requirements[PDF] provides a list of
standardized definitions and responses for a key subset
of fields on the four UAD appraisal report forms.