Once the Construction Official has determined that the design plan to convert the unit entrances from adaptable to accessible meet the requirements of the Barrier Free Subcode, N.J.A.C. 5:23-7, and that the cost estimate of such conversion is reasonable, payment shall be made to the Borough's Affordable Housing Trust Fund, if applicable, in care of the Borough Chief Financial Officer who shall ensure that the funds are deposited into the Affordable Housing Trust Fund, if applicable, and appropriately earmarked.