La. R.S. 40:1592

The requirements contained in this Part apply to all structures, watercraft, and movables. However, the fire marshal may limit their application insofar as they affect structures existing on or before July 28, 1948, whenever he determines that reasonable steps have been taken in connection therewith to protect life and property from the hazards of fire and of panic which may arise from fire or from the threat of fire or explosion.