For mortgages that are not closed prior to the Incident Period, as defined by FEMA, in Presidentially Declared Major Disaster Areas (PDMDA) where a damage inspection report reveals property damage, the appraisal validity period is extended from 120 days to a maximum of one year from the effective date of the original appraisal.
In no instance will an appraisal be acceptable for a mortgage closing that has an effective date beyond one year. Mortgages with appraisals having effective dates in excess of one year require a new appraisal.
For additional information see Handbook 4000.1 II.A.7.c.iii. available at https://www.hud.gov/program_offices/administration/hudclips/handbooks/hsgh