N.J. Stat. § 46:24-2
If commissioners shall be appointed under section 46:24-1 of this Title, they may, in the name of the board of chosen freeholders of the county for which they shall be appointed, for the purpose of procuring and preparing the maps and indexes directed by this chapter to be procured and prepared, putting the same in use and otherwise carrying out the directions and intent of this chapter, hire rooms, purchase stationery and material and employ such surveyors, draughtsmen, or other persons as they may require for such purpose. The compensation for such labor and the cost of room rent, materials and work shall, from time to time, be certified by the commissioners to the Superior Court, and the judge of such court shall, if satisfied of the correctness of such expenditures, order the payment thereof by the board of chosen freeholders of such county, and the board shall order the county treasurer to pay the same out of such funds appropriated or to be appropriated for the maintenance of the courts and records of such county, or of any unexpended balance.
The commissioners shall, as soon as they conveniently can after their appointment, submit to the board of chosen freeholders a statement of the probable cost and expense of procuring and preparing the required maps and indexes and putting the same in use.
N.J.S. § 46:24-2