Off-Grid Living in Jefferson Davis Parish, Louisiana

Jefferson Davis Parish is a bit of an outlier for rural Louisiana: most parishes I've researched have no countywide zoning at all, but Jefferson Davis Parish's Police Jury has actually adopted a parish-wide zoning ordinance (Chapter 21 of its Code of Ordinances, hosted on Municode). That changes the math for anyone thinking about buying raw land here and just doing their own thing, so the district your parcel sits in (agricultural/residential, light industrial, commercial, etc.) matters before you plan anything.

On building, the parish runs its own Building Permit Office out of Jennings, which administers Louisiana's statewide Uniform Construction Code locally. I couldn't find parish-specific language on tiny homes, RVs, or Appendix Q small-dwelling standards in the Municode index I reviewed, so if that's your plan, call the Building Permit Office directly and ask how they classify and size-limit dwellings in your zoning district.

Septic is handled through the Jefferson Davis Health Unit / Sanitarian Services office, which is really just the local face of the Louisiana Department of Health's statewide onsite wastewater program. There's no parish ordinance carving out its own septic rules, so you're working within the state system, just with a local office to call.

Greywater and rainwater harvesting don't appear to have any parish-specific ordinances at all. That likely means they default to the Louisiana State Plumbing Code's provisions on nonpotable water reuse and stormwater, administered at the state level, but I'd confirm that with the parish before assuming rainwater catchment is a non-issue.

Wells are also state territory: Louisiana's Department of Energy and Natural Resources' Office of Conservation and LDH handle well construction and registration statewide, and I found nothing in the parish code overriding that baseline. That said, the parish does run its own Water & Sewer Commission No. 1, created by the Police Jury in 1999 under state law, which builds and maintains waterworks in parts of the parish, so if you're near a served area, your well options might interact with that system.

On living off-grid entirely, disconnected from utilities, I didn't find a parish ordinance mandating hookup to electric, water, or sewer. That's encouraging, but it's also just an absence of evidence rather than a confirmed green light, especially since I couldn't verify what happens outside the Water & Sewer Commission's service boundaries. The honest answer is: this parish has more regulatory structure than many of its rural neighbors, and the safest move is a phone call to the Police Jury and Building Permit Office before you commit to land.