If the refurbishing of the damaged unit or the construction of the unit replacing the damaged unit expands the water system use or the sewerage system use, or both, as the case may be, the property owner of the refurbished unit or the newly constructed unit, as applicable, shall be credited for any connection fee or tapping fee previously paid for the unit and shall be assessed the difference between the credit and the connection fee or tapping fee, as applicable, for the new class of use.
N.J.S. § 40:14B-22.4