The Appraiser and Property requirements for Title II forward and reverse mortgages are in Handbook 4000.1 II.D.
Additional requirements for Condominium Projects are in Handbook 4000.1 II.D.6.
A Condominium Project must be on the list of FHA-approved condominiums unless it meets the definition for a site condominium. Instructions detailing specific requirements for reporting the results of the appraisal are found in the FHA Single Family Housing Appraisal Report and Data Delivery Guide at https://www.hud.gov/program_offices/housing/sfh/handbook_references
For additional information see Handbook 4000.1 II.D and II.D.6 at https://www.hud.gov/program_offices/administration/hudclips/handbooks/hsgh