Upon preliminary approval by the State Bond Commission pursuant to the provisions of § 3-20, the state, acting by and through the Commissioner of Housing, may enter into a contract or contracts with an authority, a municipal developer, a nonprofit corporation or a housing partnership for state financial assistance for a congregate housing project, in the form of capital grants, interim loans, permanent loans, deferred loans or any combination thereof for application to the development cost of such project or projects. A contract with an authority, a municipal developer, a nonprofit corporation or a housing partnership may provide that in the case of any loan made in conjunction with any housing assistance funds provided by an agency of the United States government, if such housing assistance funds terminate prior to complete repayment of a loan made pursuant to this section, the remaining balance of such loan may be converted to a capital grant or decreased loan. Any such state assistance contract with an authority, a municipal developer, a nonprofit corporation or a housing partnership for a capital grant or loan entered into prior to the time housing assistance funds became available from an agency of the United States government, may, upon the mutual consent of the commissioner and the authority, municipal developer, nonprofit corporation or housing partnership, be renegotiated to provide for a loan or increased loan in the place of a capital grant or loan or a part thereof, consistent with the above conditions. Such capital grants or loans shall be in an amount not in excess of the development cost of the project or projects, including, in the case of grants or loans financed from the proceeds of the state’s general obligation bonds issued pursuant to any authorization, allocation or approval of the State Bond Commission made prior to July 1, 1990, administrative or other cost or expense to be incurred by the state in connection therewith, as approved by said commissioner. In anticipation of final payment of such capital grants or loans, the state, acting by and through said commissioner and in accordance with such contract, may make temporary advances to the authority, municipal developer, nonprofit corporation or housing partnership for preliminary planning expense or other development cost of such project or projects. Any loan provided pursuant to this section shall bear interest at a rate to be determined in accordance with subsection (t) of § 3-20. Any such authority, municipal developer, nonprofit corporation or housing partnership may, subject to the approval of the Commissioner of Housing, contract with any other person approved by the Commissioner of Housing for the operation of a project undertaken pursuant to this part. As used in this section, “housing partnership” has the same meaning as provided in subsection (n) of § 8-113a.