Do I need a permit for retaining wall construction in Unincorporated St. John the Baptist Parish?
Most likely yes. Retaining wall construction usually requires a permit in Louisiana. Confirm the specifics with Unincorporated St. John the Baptist Parish.
Louisiana adopts the IRC without its administrative part (LAC 17:I.107), so the IRC's exemption for retaining walls 4 feet or less does not apply statewide; the parish or municipal office decides. Before any digging, the excavator must notify the regional notification center at least 48 hours ahead, excluding weekends and holidays (La. R.S. 40:1749.13(B)). Persons who work only in landscaping are exempt from home improvement licensure (La. R.S. 37:2157(A)(15)(c)); that is a licensing exemption, not a permit exemption.
Documents you may need
- Permit application, where the local office requires oneLikely required
- Property address and parcel informationRequired
- Site plan showing the wall location, height, and drainageLikely required
- Wall section and drainage detailsSometimes required
- Engineered design for tall walls or walls that support a surcharge such as a driveway or buildingSometimes required
Possible inspections
- Footing or base inspection where required
- Final inspection where required
Frequently asked questions
- Do I need a permit for retaining wall construction in Unincorporated St. John the Baptist Parish?
- Most likely yes. Retaining wall construction usually requires a permit in Louisiana. Confirm the specifics with Unincorporated St. John the Baptist Parish. The documents and inspections sections on this page list what the building department typically asks for.
- Who issues the permit in Unincorporated St. John the Baptist Parish?
- The local building department for Unincorporated St. John the Baptist 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.