La. Civ. Code art. 2572
Current with changes from the 2024 Legislative Session
When the thing is immovable, the right of redemption is effective against third persons only from the time the instrument that contains it is filed for registry in the parish where the immovable is located.
When the thing is movable, the right of redemption is effective against third persons who, at the time of purchase, had actual knowledge of the existence of that right.
La. C.C. § 2572