When constructions, plantings, or works are made by a bad faith possessor, the owner of the immovable may keep them or he may demand their demolition and removal at the expense of the possessor, and, in addition, damages for the injury that he may have sustained.  If he does not demand demolition and removal, he is bound to pay at his option either the current value of the materials and of the workmanship of the separable improvements that he has kept or the enhanced value of the immovable.

Acts 1979, No. 180, §1.