24 C.F.R. § 81.53
(b) Each program request shall include:
(f) Time for review. Unless the Secretary and, where appropriate, the Director of OFHEO, need additional information, a program request shall be approved or disapproved within 45 days from the date it is received by the Director, Office of Government-Sponsored Enterprises, and, where applicable, the Director of OFHEO. If within 45 days after receiving a request, the Secretary or the Director of OFHEO determine that additional information is necessary to review the matter and request such information from the GSE, the Secretary may extend the time period for consideration for an additional 15 days.