N.J. Stat. § 52:32-5
The Department of Community Affairs shall promulgate regulations which shall prescribe the kinds, types, and quality of facilities in public buildings as defined in section 3 of P.L. 1975, c.220 (C.52:32-6) required to provide access for persons with physical disabilities. The regulations shall differentiate between small public buildings, defined as those with a total gross enclosed floor area of less than 10,000 square feet, and large public buildings, defined as those with a total gross enclosed floor area of 10,000 square feet or more. Small public buildings shall be required to have accessible entrances servicing the first or ground floor areas and facilities for persons with physical disabilities on all accessible floors, however, the provisions for small public buildings shall not apply to the conversion of a small public building to another use or to renovations or modifications of a small public building if there is insufficient space between the building and its lot lines or between the building and the public way to allow for the installation of an entrance ramp which meets the criteria of the "State Uniform Construction Code" adopted pursuant to the "State Uniform Construction Code Act," P.L. 1975, c.217 (C.52:27D-119 et seq.). Large public buildings shall be required to have accessible entrances, facilities for persons with physical disabilities on all accessible floors, and elevators or other means of access for persons with physical disabilities between floors, except floors which contain only mechanical equipment or floors which contain less than 3,000 square feet of total floor area.
N.J.S. § 52:32-5