Legal Question in Landlord & Tenant Law in Louisiana

You have to look at the lease. If the lease sets a due date for the rent, the landlord cannot change it. The lease is what attorneys call "the law between the parties". That means that the lease provisions have the effect of law between you and your landlord and he cannot violate them any more than you can. If the lease does not state anything about a due date, a landlord could arguably change the date. However, even in that instance, he would have to pro-rate one month to ensure that you aren't double paying for any days rent.