N.J. Stat. § 40A:12-9
Any county or municipality may provide for the construction and maintenance of one or more buildings and structures for the use of any department or for the joint use of two or more departments and may acquire suitable land therefor. Where in any municipality there is a board having certain governmental functions as well as a governing body any two or more such bodies may join in the purchase or condemnation of land and the construction and maintenance of buildings for common use by such departments, parts thereof, or officers of the bodies so joining. Any such governing body may permit any such other body thereof the use of any land or building, or part thereof, controlled by it upon such terms as may be mutually agreed upon.
N.J.S. § 40A:12-9