N.J. Stat. § 20:4-8
Whenever the acquisition of real property for a program or project undertaken by a taking agency will result in the displacement of any person on or after the effective date of this section, such agency shall assure that, within a reasonable period of time, prior to displacement, there will be available, in areas not generally less desirable in regard to public utilities and public and commercial facilities and at rents or prices within the financial means of the families and individuals displaced, decent, safe and sanitary dwellings equal in number to the number of and available to such displaced persons who require such dwellings and reasonably accessible to their places of employment; except that regulations issued pursuant to section 10 of this act may prescribe situations when these assurances may be waived.
N.J.S. § 20:4-8