5 county-level rules, plus city-specific rules for 1 city in Orleans Parish, Louisiana.
Verified from official government sources
New Orleans permits accessory dwelling units (ADUs) in most residential districts under the Comprehensive Zoning Ordinance. A detached ADU is an accessory structure, so within a required yard it is capped at 14 feet tall and must sit at least 3 feet from any lot line.
New Orleans CZO 21.6.A
When detached accessory structures are located within a required yard, structures are limited to a maximum height of fourteen (14) feet, unless otherwise permitted or limited by this Ordinance.
A backyard shed is a detached accessory structure under the CZO. Within a required yard it may be no more than 14 feet tall and must sit at least 3 feet from any lot line, and all rear-yard accessory structures together may cover no more than 40% of the required
New Orleans CZO 21.6.A
The combined square footage of all detached accessory structures located in the required rear yard is limited to no more than forty percent (40%) of the required rear yard area.
Converting a garage into living space is a change of use regulated by the CZO. Converting it to a separate dwelling is treated as an accessory dwelling unit, so it must meet the accessory-structure standards and the ADU use standard, plus a building permit and off-street parking review.
New Orleans CZO 21.6.A
Detached accessory structures shall be located a minimum of three (3) feet from any lot line, unless otherwise permitted or limited by this Ordinance.
A carport is a detached (or attached) accessory structure under the CZO. A detached carport in a required yard is limited to 14 feet in height and must sit at least 3 feet from any lot line, and it counts toward the 40% rear-yard accessory-structure coverage cap.
New Orleans CZO 21.6.A
When detached accessory structures are located within a required yard, structures are limited to a maximum height of fourteen (14) feet, unless otherwise permitted or limited by this Ordinance.
New Orleans has no special tiny-home category. A permanent tiny house on a foundation is regulated as a dwelling or accessory dwelling unit under the CZO and building code; a tiny house on wheels is treated as an RV, not a permitted permanent residence in residential districts.
1 cities in Orleans Parish have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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