La. Civ. Code art. 498
Current with operative changes from the 2024 Third Special Legislative Session
One who has lost the ownership of a thing to the owner of an immovable may assert against third persons his rights under Articles 493, 493.1, 494, 495, 496, or 497 when they are evidenced by an instrument filed for registry in the appropriate conveyance or mortgage records of the parish in which the immovable is located.
La. C.C. § 498