If the eligible project is to consist of one to four unit dwelling accommodations or cooperative or condominium units, the agency's share of the loan may be converted after completion of construction into mortgages on such dwelling accommodations or condominium units or financing statements filed with respect to such cooperative shares, provided such units or such cooperative shares are purchased by persons of low income. Such mortgages and any blanket mortgage that the agency retains on any portion of, or on all of, the eligible project may provide that such mortgages and such blanket mortgage will automatically be reduced to zero over a period of continuous compliance by the mortgagor with a regulatory agreement or restrictive covenant with or approved by the agency and upon the satisfaction of any additional conditions specified therein. Notwithstanding such provision as contained in such mortgage, the loan shall be reduced to zero only if, prior to or simultaneously with delivery of such mortgage, the agency made a written determination that such reduction would be necessary to ensure the continued affordability or economic viability of the eligible project. Such written determination shall document the basis upon which the loan was determined to be eligible for evaporation. Such period of continuous compliance with such regulatory agreement or restrictive covenant shall not be less than fifteen years.
N.Y. Priv. Hous. Fin. Law § 1152