24 C.F.R. § 203.359
(a) For mortgages insured under firm commitments issued prior to November 19, 1992 or under direct endorsement processing where the credit worksheet was signed by the mortgagee's approved underwriter prior to November 19, 1992. After acquiring good marketable title to and possession of the property the mortgagee must transfer the property to the Secretary:
(b) For mortgages insured under firm commitments issued on or after November 19, 1992, or under direct endorsement processing where the credit worksheet was signed by the mortgagee's underwriter on or after November 19, 1992—(1) Conveyance by the mortgagee. The mortgagee must acquire good marketable title and transfer the property to the Secretary within 30 days of the later of:
[57 FR 47971, Oct. 20, 1992, as amended at 61 FR 36453, July 10, 1996]