N.J. Stat. Ann. § 40:55D-45.4

In the event that the developer seeks to modify the proposed timing schedule, such modification shall require the approval of the planning board. The planning board shall, in deciding whether or not to grant approval of the modification, take into consideration prevailing economic and market conditions, anticipated and actual needs for residential units and nonresidential space within the municipality and the region, and the availability and capacity of public facilities to accommodate the proposed development.