N.J. Stat. Ann. § 20:4-11

In order to prevent unnecessary expense and duplication of functions, and to promote uniform and effective administration of relocation assistance programs for displaced persons, the commissioner may authorize any taking agency to enter into contracts with any individual, firm, association or corporation for services in connection with such programs, or may carry out its functions under this act through any Federal or State agency or instrumentality having an established organization for conducting relocation assistance programs.