ADU Rules in Louisiana (2026)
ADU rules in Louisiana — no statewide ADU law. Regulation is entirely local. Key provisions and city-specific frameworks for accessory dwelling units.
Law Name
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
No — regulation is local
Statewide Preemption Status Unconfirmed
No statewide preemption statute was confirmed for this jurisdiction — regulation is local. Local governments retain full authority to set their own rules.
Local Control Framework
Louisiana does not have a statewide ADU law as of 2026
ADU regulation is left entirely to local parishes and municipalities
Louisiana Revised Statutes Title 33 grants municipalities and parishes authority over local zoning
New Orleans, Baton Rouge, and Lafayette set their own local ADU and accessory dwelling rules
New Orleans has a distinctive approach to housing given its historic shotgun houses and Creole cottage tradition
Louisiana's unique parish-based government structure means land use varies significantly across the state
Source: Louisiana Local Zoning Authority. Last verified April 5, 2026.