New Orleans, LA Accessory Structures: Garage Conversions (2026)

Garage conversions in New Orleans are reviewed under the 2015 Comprehensive Zoning Ordinance, the Louisiana State Uniform Construction Code, and the New Orleans Floodplain Management Ordinance. If the conversion creates a second dwelling unit, the resulting space must meet the auxiliary dwelling unit standards in CZO Article 21, including size limits, owner-occupancy requirements in many districts, and minimum livability standards such as ceiling height (generally 7 feet), egress windows, and ventilation. If the conversion only adds bonus space such as a home office, gym, or storage room, ADU standards do not apply but full building code requirements still do, including insulation, smoke alarms, carbon monoxide alarms, and proper electrical service. All habitable conversions require building, electrical, plumbing, and mechanical permits processed through the Department of Safety and Permits with inspections at framing, rough-in, and final stages. Properties in HDLC or Vieux Carre districts must obtain a Certificate of Appropriateness covering changes to door openings, windows, and exterior materials. Properties in FEMA Special Flood Hazard Areas must elevate finished floor to or above base flood elevation, which often requires raising the structure or, for substantial improvements exceeding 50 percent of the structure's value, full compliance with current floodplain rules. Off-street parking removed by conversion must usually be replaced unless the lot qualifies for a parking waiver in walkable urban districts.