Off-grid site report
Washington Parish, LA
30.9899, -89.8386 · 249 ft elevationRead this before you act on anything below. This is my researched starting point for Washington Parish, LA, not legal advice and not a guarantee. Rules change, and the deciding facts on any specific parcel (setbacks, perc results, overlay districts, deed restrictions, road frontage) live at the county or town office, not in any database. Before you buy land or build, confirm the current rules directly with the local zoning and health offices - the sources on this page tell you exactly who to call.
The local rulesWashington Parish, LA
Zoning & raw-land occupancy
Varies locallyWashington Parish has adopted a countywide Development Ordinance for unincorporated areas, administered by the Parish Planning Commission under state enabling law, but the specific land-use/occupancy rules for raw land were not confirmed in available text. Incorporated towns like Franklinton and Bogalusa may have separate rules.
Dwellings, tiny homes & RVs
Unclear - verifyThe Building & Planning Department requires a notarized Land Use Permission form for placing structures on land, but explicit tiny-home or RV-as-dwelling rules were not confirmed. Ask the Building & Planning Department directly.
Building permits & codes
Generally allowedDevelopment and building permits are required and issued through the Washington Parish Building and Permitting Department, under a series of Planning Commission ordinances. Fee amounts should be confirmed directly with that office rather than assumed. source
Septic & composting toilets
RestrictedSeptic permitting is handled by the Louisiana Department of Health through the Washington Parish Health Unit, with a narrow exception allowing owner-installed non-mechanical systems if the owner does the actual work. Local soil/perc conditions can limit what's allowed on a given site. source
Greywater reuse
RestrictedNo parish-specific greywater ordinance was found; this likely defaults to the state's fixture-limited nonpotable water reuse framework. Not confirmed whether the parish's Development Ordinance adds further restriction.
Rainwater harvesting
Generally allowedNo parish-specific rainwater ordinance was found, so this appears to inherit the state plumbing/storm-drainage code baseline, which generally permits rainwater harvesting.
Private wells & water rights
Generally allowedPrivate wells are permitted; the parish Building Department ties well installation to an electrical service requirement on its residential permit checklist, and well construction is otherwise governed by state agencies.
Living disconnected from utilities
Varies locallyNo parish ordinance was found either mandating utility hookups or restricting off-grid living, but whether occupancy permits carry a hidden utility-connection requirement is not confirmed. Ask the Building & Planning Department directly.
Sun30-year normals
- Peak-sun hours, annual average
- 5.3 hrs/day
- Worst month (sizes an off-grid array)
- 3.7 hrs/day
- Yearly output per 1 kW of panels
- 1,391 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 61 in/yr
- Snowfall
- 0 in/yr
- Heating degree days
- 2,050 (mild)
- Frost-free season
- Mar 11 to Nov 19
How far help isstraight-line
- Hospital
Our Lady of the Angels Hospital - 14.7 mi
- Fire station
Walthall County 3rd District Fire Department - 6.1 mi
- Hardware store
Ace Hardware - 21.1 mi
- Grocery
Piggly Wiggly - 2.4 mi
From OpenStreetMap. Road miles will be longer, often much longer in hill country.
Plan this spot
These open with this location's real numbers already filled in (ZIP 39478).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
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Sources: US Census Bureau geocoder; NLR PVWatts v8 (solar); NOAA NCEI 1991-2020 climate normals (nearest station) or Open-Meteo (ZIP-centroid) for weather; Open-Elevation; OpenStreetMap contributors. Public data retrieved Aug 22, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.