(d) No loans shall be made by the Housing Development Fund from the land development fund except in accordance with a written loan agreement which shall include, but not be limited to, the following terms and conditions:
- (1) The proceeds of all such loans shall be used only for development costs and land development;
- (2) All such loans shall be repaid in full, with or without interest, as provided in the agreement;
- (3) All repayments shall be made concurrent with receipt by the borrower of the proceeds of a construction loan or mortgage, as the case may be, or at such other times as the Housing Development Fund deems reasonably necessary or practicable; and
- (4) Specification of such security for repayments upon such terms and conditions as the Housing Development Fund deems reasonably necessary or practicable.