Loans in an amount not exceeding one-half of the cost of construction or reconstruction including the cost or value of real estate upon which the facility is located and in no event exceeding one hundred fifty thousand dollars to any one applicant shall be made by the Bank of North Dakota to nonprofit corporations to be used in the construction or reconstruction in this state of nursing homes, basic care facilities, or combination nursing homes and basic care facilities. Such loans must bear interest at the rate of seven percent per annum and must be repayable in the manner prescribed by the president of the Bank of North Dakota within a period of not more than twenty-five years. In addition, in consideration of the granting of the loans, each nonprofit corporation shall execute a contract with the state to operate such basic care facility for a period of not less than twenty years and to operate and maintain the basic care facility in accordance with the standards prescribed for the licensing of such basic care facility by the department of health and human services. Such contract must also require the nonprofit corporation to maintain facilities for not less than five persons referred to such basic care facility by any county social service board. Such contract must also provide that if the use of such basic care facility is discontinued or if it is diverted to other purposes, the full amount of the loan provided under this chapter immediately becomes due and payable. Loans may be made only to an applicant who is not receiving other loans or grants of funds from this state for such construction or reconstruction. Payments of interest and principal upon such loans must be made to the Bank of North Dakota and credited to the revolving fund.