ADU Laws in Louisiana (2026)
Louisiana state ADU law details, key provisions, preemption status, and recent legislative changes for accessory dwelling units.
Law Name
State ADU Law
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
Yes
Key Provisions
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
Official Sources
Source: Louisiana State ADU Law. Last verified April 5, 2026. View source