La. Civ. Code art. 472
Current with operative changes from the 2024 Third Special Legislative Session
Materials gathered for the erection of a new building or other construction, even though deriving from the demolition of an old one, are movables until their incorporation into the new building or after construction.
Materials separated from a building or other construction for the purpose of repair, addition, or alteration to it, with the intention of putting them back, remain immovables.
La. C.C. § 472