Accessory dwelling unit permit cost — New Orleans, LA
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
Frequently asked in New Orleans
What are the disadvantages of ADUs in Louisiana?
Disadvantages of ADUs in Louisiana can include the initial investment in construction and adherence to New Orleans' specific historic district regulations if applicable. You'll also want to consider potential impacts on your property's yard and drainage. A local pro can guide you through these.
How much does an ADU cost in Louisiana?
What are the rules for ADUs in Louisiana?
Is an ADU allowed in New Orleans?
What is the permit cost for an ADU in New Orleans?
Can I get a grant for an ADU in Louisiana?
Also serving nearby: Baton Rouge · Mobile · Lafayette · Jackson · Beaumont
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of New Orleans — population 364,136; about 2,148 residents per square mile across 169.5 sq mi. ZIP codes covered include 70112, 70113, 70114, 70115, 70116, 70117, 70118, 70119.
Neighborhoods served in New Orleans: French Quarter, Garden District, Uptown, Bywater, Mid-City, Marigny — and every surrounding area.
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