24 C.F.R. § 206.142
(a) Except as provided for in paragraphs (a)(1) and (a)(2) of this section: if the property has been damaged by fire, flood, earthquake, hurricane, or tornado, the damage must be repaired before assignment of the mortgage to the Commissioner; if the property has suffered damage because of the mortgagee's failure to take action as required by § 206.140, the damage must be repaired before the mortgagee sells the property.
(2) If the property has been damaged by fire and was not covered by fire insurance at the time of the damage, or the amount of insurance coverage was inadequate to repair fully the damage, only the amount of insurance recovery received by the mortgagee, if any, will be deducted from the insurance benefits, provided the mortgagee certifies, at the time that a claim is filed for insurance benefits, that:
(b) If the property has been damaged during the time of the mortgagee's possession by events other than fire, flood, earthquake, hurricane, or tornado, or if it was damaged notwithstanding reasonable action by the mortgagee as required by § 206.140, the mortgagee must provide notice of such damage to the Commissioner and may not sell the property until directed to do so by the Commissioner. The Commissioner will either: