La. Stat. tit. 33 § 140.204
For the purpose of promoting the public health, safety, morals, convenience, order, prosperity, and general welfare, the city council of a participating municipality and the police jury of Calcasieu Parish are hereby empowered, in accordance with the conditions and the procedures specified in this Subpart, to regulate the location, height, bulk, number of stories, and size of buildings and other structures, the percentage of the lot which may be occupied, the sizes of yards, courts, or other open spaces, the density of population, and the uses of buildings, structures, and land for trade, industry, residence, recreation, civic activities, and other purposes, within the municipality in the case of a participating municipality and within that part of Calcasieu Parish within the metropolitan planning area but outside any incorporated municipality in the case of Calcasieu Parish.
La. R.S. § 33:140.204