In addition to, but separate and apart from, the official certificates of searches for municipal liens as authorized by sections 54:5-11 et seq. of the Revised Statutes, the governing body of each municipality shall provide by resolution for the making of official certificates of searches as to municipal improvements authorized by ordinance of the municipality, but not assessed, affecting any parcel or tract of land in said municipality in that a future assessment will be made thereon pursuant to such ordinance.
N.J.S. § 54:5-18.1