24 C.F.R. § 221.305
(a) When a family unit is conveyed or a mortgage is assigned to the Commissioner, the family unit and the common areas and facilities (including restricted common areas and facilities) designated for the particular unit shall be undamaged by fire, earthquake, tornado, or boiler explosion, except if the property has been damaged, either of the following actions shall be taken:
(b) If the property has been damaged by fire and such property was not covered by fire insurance at the time of the damage, the mortgagee may convey the property or assign the mortgage to the Commissioner without deduction from the insurance benefits for any loss occasioned by such fire if the following conditions are met: