Off-Grid Living in St. John the Baptist Parish, Louisiana

I'll be upfront: St. John the Baptist Parish is not a "no rules, do what you want" place for off-grid living. Unlike some unzoned Louisiana parishes, this one has had parish-wide zoning since 1988, administered by the Planning & Zoning Department, and the whole parish sits inside the state-defined coastal zone, which adds another layer of permitting most people don't expect.

Zoning and raw land. Every parcel in the parish has a zoning designation under the Comprehensive Zoning Ordinance. If your land use doesn't fit the district, you'd need a variance from the Zoning Board of Adjustments, and the parish is explicit that "economic or personal reasons" don't count as hardship. On top of that, because the parish lies in the coastal zone, clearing land, placing fill, or grading a site can trigger the need for a Coastal Use Permit or a documented exemption. This isn't optional paperwork to skip.

Dwellings, tiny homes, RVs. Wanting to live permanently in a tiny home, mobile home, or RV here means going through the Planning Commission, not just pulling a permit. The parish ordinance allows permanent manufactured/mobile home installation on a permanent foundation, but it has to be compatible with surrounding site-built homes within a set radius, and it requires a public hearing with a posted notice sign. A denial can be appealed to the Parish Council, but that takes a supermajority vote unless the Commission was unanimous. Treat this as a discretionary, hearing-based process.

Building permits. The Permit Division enforces state-adopted building codes plus the parish's own Code of Ordinances, and a Certificate of Occupancy won't be issued until everything, including any needed sign, road-crossing, demolition, or DEQ permits, is documented and approved. The parish now runs an online portal for these applications.

Septic and composting toilets. Louisiana state law (naming this parish specifically) bars the parish from writing its own septic rules without sign-off from the Louisiana Department of Health. There's a narrow carve-out for older rural subdivision homes (pre-1980) to use certain septic or mechanical treatment systems if LDH and the local parish health authority accept them. Composting toilets aren't addressed in anything I found at the parish level, so I'd confirm with LDH's statewide sewerage rules and the parish health unit directly.

Greywater, rainwater, wells. I didn't find parish-specific rules on any of these. Greywater reuse falls back to the state plumbing code. Rainwater harvesting for household use looks fine, the parish's stormwater chapter is aimed at construction-site drainage, not rain barrels. Private wells appear to run on the state baseline through LDENR and LDH, with no added parish permitting found.

Utility disconnection. No standalone "must connect to the grid" ordinance turned up. Living off-grid utility-wise would just flow through the standard building permit, health, and coastal review chain described above.

Bottom line: this parish regulates land use more actively than many rural Louisiana parishes. Call before you buy or build.