N.J. Stat. Ann. § 2A:18-61.45

6. Each municipal governing body in a qualified county shall designate a municipal board, agency or officer to act as its administrative agency for the purposes of this act or may enter into a contractual agreement with an appropriate county to act as its administrative agency for purposes of this act. In the absence of such authorization or contractual agreement, this act shall be administered by the board, agency or officer administering the provisions of the "Senior Citizens and Disabled Protected Tenancy Act," P.L.1981, c.226 (C.2A:18-61.22 et al.) in the municipality.