Can you live off-grid in Plaquemines Parish, Louisiana?
62
of 100
Major concerns
Possible, but hard and costly. NOAA counts eight hurricane-strength storms within 50 miles since 1975, so build to the wind code and plan for long outages. Rain is plentiful, about 65 inches a year. Flood zones are common here, so look up any parcel on FEMA's flood map before you offer.
What the land says
Rain
Rain can supply much of a household's water with a large tank. A garden mostly waters itself in normal years.
About 65 inches a year (PRISM, 1991 to 2020 average)
Wells
Deep wells. Get a driller's quote before you offer.
The typical well here is about 350 feet deep; a well typically runs $11,000 to $23,000
Growing season
Long enough for a spring and a fall garden.
About 346 frost-free days, USDA zone 10a; last frost about January 26, first about December 17
Sun
Good sun. Size the array and battery bank for winter.
About 5.4 hours of full sun a day, averaged over the year
Flood
Flood zones are common here. Look up any parcel on FEMA's flood map before you offer.
FEMA maps flood zones across the county
Wildfire
Low wildfire risk.
U.S. Forest Service wildfire hazard map: Very Low to Low here
Storms
Expect about five hurricanes within 50 miles over 30 years. Build to the wind code and keep a week of fuel and water.
NOAA: eight hurricane-strength storms within 50 miles since 1975; no strong (EF2 or stronger) tornado within 25 miles since 1990
Terrain
Flat, but the ground stays wet. Build on the higher, drier spot.
Slopes average about 0%, about 0 feet above sea level
Soil
Expect an engineered septic system. The ground stays wet most of the year. The county's soil test decides.
Clay, very poorly drained (USDA soil survey). An engineered system typically runs $15,000 to $25,000
Check a Louisiana parcel, or plan the one you own
Get a free 0-100 off-grid score.
A step-by-step build plan, sizing your solar, water, garden, septic, heat, and buildings.
Is it legal here?
Zoning
We found no public zoning map for Plaquemines Parish, so call the parish planning office with the parcel number to ask whether the land is zoned.
Building code
Louisiana's Uniform Construction Code, which includes the International Residential Code for homes, is mandatory statewide, and every parish and city must enforce it with permits and inspections, including in unincorporated areas.
Rainwater
Collecting it is allowed.
Composting toilets
Allowed.
Water rights
Owners of land along a creek or lake can make reasonable use of its water.
Drilled to about 350 feet, with pump and pressure tank
Septic
$15,000 to $25,000
Engineered system
Solar and batteries
$18,000 to $34,000
Sized for a modest household
Road or driveway
$2,000 to $7,000
From the nearest road to a house site
Clearing
$1,000 to $3,000
A house site, solar, and garden
Total
$46,000 to $93,000
Before the house
Before you make an offer on land here
Flood map
Look up the parcel on FEMA's flood map.
Flood zones are common here. Building in one means flood insurance and extra permits.
Well cost
Get a driller's quote.
Wells here run near 350 feet, so the well is a large cost.
Soil test
Get a soil test before you count on septic.
The soil stays wet, which can rule out a standard system.
Nearby counties
22,386 people live in Plaquemines Parish, about 28.7 per square mile. It ranks 59th of the 64 Louisiana counties we scored, and Louisiana ranks 24th of 50 states.
Sources: FEMA flood maps, USGS and state driller well records, USGS brackish groundwater study, USDA soil survey, USGS 3DEP elevation, U.S. Forest Service wildfire hazard, USGS seismic hazard, USGS PAD-US public land, U.S. Census housing counts, USDA county land values, FCC broadband map, CMS hospital list. Rainfall: PRISM Group, Oregon State University, prism.oregonstate.edu (1991-2020 normals, 4 km grid; accessed 2026-09-17). Temperatures: PRISM Group, Oregon State University, prism.oregonstate.edu (1991-2020 temperature normals, 4 km grid; accessed 2026-09-26). Storms: NOAA hurricane tracks (HURDAT2, 1975-2025) and Storm Prediction Center tornado paths (EF2+, 1990-2025). Data updated September 2026.