N.J. Stat. Ann. § 2A:18-61.26

The governing body of the municipality may authorize a municipal board, agency or officer to act as its administrative agency for the purposes of this amendatory and supplementary act or may enter into a contractual agreement with a county office on aging or a similar agency to act as its administrative agency for purposes of this amendatory and supplementary act. In the absence of such authorization or contractual agreement, this amendatory and supplementary act shall be administered by a municipal board whose principal responsibility concerns the regulation of residential rents or, if no such board exists, by the municipal clerk.