The maximum duration of a residential lease in Louisiana is 99 years (LA Civ Code 2679 (2018)). Standard leases last for one (1) year, though the duration may vary widely.
Unlike other states, Louisiana does not require leases of a certain duration to have a lease in writing. No matter how long the lease is, it can be agreed upon verbally and still be enforceable. However, it is highly recommended that leases of any duration be in writing, as verbal leases are more difficult to prove.
If there is no set duration provided by the lease, the tenancy is assumed to be month-to-month (LA Civ Code 2680 (2018)).
The information for this answer was found on our Louisiana Residential Lease Agreement answers.