La. Stat. tit. 33 § 101.1
Except as otherwise provided in this Subpart, the act of approving or disapproving a subdivision plat is hereby declared a legislative function involving the exercise of legislative discretion by the planning commission, based upon data presented to it; provided that any subdivision ordinance enacted by the governing authority of a parish or municipality or the acts of the planning commission, or planning administrator shall be subject to judicial review on the grounds of abuse of discretion, unreasonable exercise of police powers, an excessive use of the power herein granted, or denial of the right of due process. The right of judicial review of a subdivision ordinance shall not be limited by the foregoing, however, nothing contained in this Subpart or in any subdivision ordinance adopted by a parish or municipality shall be construed as imposing upon such parish or municipality a duty, special or otherwise, to or for the benefit of any individual person or group of persons.
La. R.S. § 33:101.1