Who issues the permit in Unincorporated Lafourche Parish?

The local building department for Unincorporated Lafourche Parish handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.

How do I find out the exact requirements for my project?

Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.

Do I need a permit for accessory dwelling unit (adu) in Unincorporated Lafourche Parish?

Permit required

Yes. In Louisiana, accessory dwelling unit (adu) generally requires a permit, and Unincorporated Lafourche Parish is no exception.

Louisiana's code rules define an accessory dwelling unit and require it to be designed and built to the Uniform Construction Code, with plan review and inspection by a registered inspector (LAC 17:I.107). No Louisiana statute was found that requires parishes or municipalities to allow ADUs; whether one is allowed on a lot is set by local zoning. The owner exemption from contractor licensing covers an owner's personal residence and one residence per year (La. R.S. 37:2157(A)(13)), so confirm with the LSLBC whether it covers an ADU built for rent. State law requires existing one- or two-family dwellings to have a ten-year sealed-battery smoke detector and a sealed-battery carbon monoxide detector at the time of sale or lease (La. R.S. 40:1581).

Get the checklist for your accessory dwelling unit (adu) in Unincorporated Lafourche Parish. A free check first, then a free printable Permit Prep Pack.

Documents you may need

Building permit application to the parish or municipal permit officeRequired
Property address and parcel informationRequired
Site plan showing the ADU, the main house, setbacks, and utility connectionsLikely required
Construction drawings for plan reviewRequired
Builder's LSLBC license number, or the owner's LSLBC exemption affidavitLikely required

Possible inspections

Foundation inspection
Framing and rough electrical, plumbing, and mechanical inspections
Insulation or energy inspection where enforced
Final inspection

Frequently asked questions

Do I need a permit for accessory dwelling unit (adu) in Unincorporated Lafourche Parish?: Yes. In Louisiana, accessory dwelling unit (adu) generally requires a permit, and Unincorporated Lafourche Parish is no exception. The documents and inspections sections on this page list what the building department typically asks for.
Who issues the permit in Unincorporated Lafourche Parish?: The local building department for Unincorporated Lafourche Parish handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
How do I find out the exact requirements for my project?: Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.

PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.