24 C.F.R. § 248.169
(a) In general. Notwithstanding any limitations on prepayment or voluntary termination under subpart B of this part, an owner may terminate the low income affordability restrictions through prepayment or voluntary termination, subject to compliance with the provisions of § 248.165, under one of the following circumstances:
(2) After the date that the project would have been eligible for prepayment pursuant to the terms of the mortgage, notwithstanding this part, the Commissioner approves a plan of action under § 248.157 or § 248.161, but does not provide the assistance approved in such plan, including section 8 assistance, a loan provided under part 219 of this chapter, a grant provided under § 248.157(o), or a grant under § 248.161(d), before the earlier of:
(3) The Commissioner approves a plan of action under §§ 248.157 or 248.161 for any eligible low income housing not covered by paragraph (a)(2) of this section, but does not provide the assistance approved in such plan before the earlier of:
(4) An owner who intended to transfer the project to a qualified purchaser under § 248.157 or § 248.161, and fully complied with the provisions of such section,
(b) Section 8 assistance. When providing section 8 assistance, the Commissioner may enter into a contract with an owner, contingent upon the future availability of appropriations, for the purpose of renewing expiring contracts for rental assistance as provided in appropriations acts, to extend the term of such rental assistance for such additional period or periods necessary to carry out an approved plan of action. The contract and approved plan of action shall provide that, if the Commissioner is unable to extend the term of such rental assistance or is unable to develop a revised package of incentives providing benefits to the owner comparable to those received under the original approved plan of action, the Commissioner, upon the request of the owner, shall take the following actions, subject to the limitations under the following paragraphs: