Off-Grid Living in Ascension Parish, Louisiana

I've been digging into off-grid rules across Louisiana parishes, and Ascension Parish stands out because, unlike a lot of rural Louisiana parishes with no zoning at all, Ascension actually has countywide zoning through its Unified Land Development Code (ULDC). That's the first thing to understand here: where you land in the parish, and whether you're inside one of the incorporated towns (Gonzales, Donaldsonville, Sorrento, St. Amant), changes what applies to you.

Zoning. The Ascension Parish Zoning Office administers the Development Code, which sorts land into districts like Conservation, Light/Medium/Heavy Industry, Mixed Use Corridors, and PUD categories. If you're eyeing raw land for an off-grid setup, you need to check which district it falls in before assuming you can just build. Incorporated towns can layer their own rules on top.

Tiny homes, mobile homes, and RVs. This is where things get restrictive. The ULDC has separate appendices (Appendix VIII for mobile home parks, Appendix IX for RV parks) governing these as land uses. Living in an RV or tiny home as a standalone residence outside a designated park depends on what the underlying zoning district's permitted-use table allows, not any parish-wide blanket permission. I'd call the Zoning Office before buying a tiny home with plans to park it on raw land.

Building permits. The parish Building Department enforces the state-adopted construction codes (recent editions of the International Building Code, Mechanical Code, and NEC as adopted). On top of that, Ascension has its own drainage/flood layer: since flooding is a real concern here, the parish requires Drainage Impact Studies before approving certain building permits and caps how much fill you can add near a foundation. Confirm current specifics with the Building Department directly, since I don't have exact code editions or fill limits guaranteed to be current.

Septic and composting toilets. Louisiana's Department of Health runs the state's Onsite Wastewater Program, but it's administered locally through the parish Health Unit (Gonzales or Donaldsonville office, depending on which side of the river you're on). Composting toilets aren't separately addressed anywhere I found, so treat that as unclear, defer to the state's system-type definitions and ask the Health Unit directly.

Greywater and rainwater harvesting. I found no Ascension-specific ordinances on either. That means the state Plumbing Code baseline likely applies for greywater, and rainwater harvesting doesn't appear separately restricted, though parish stormwater/drainage rules could touch site design. Worth a call to confirm.

Wells. Groundwater is available parish-wide, but most residents actually connect to public water districts rather than drilling. Well construction permitting is a state function under the Office of Conservation, and I found no parish-specific well ordinance.

Living off-grid entirely. No parish rule specifically blocks or protects disconnecting from utilities beyond the state baseline. Your building and zoning permits will still apply, though.