Off-grid site report
Posey County, IN
38.1411, -87.8012 · 440 ft elevationRead this before you act on anything below. This is my researched starting point for Posey County, IN, 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 rulesPosey County, IN
Zoning & raw-land occupancy
Varies locallyPosey County has a countywide joint zoning ordinance covering unincorporated areas plus Poseyville and Cynthiana (Mount Vernon and other towns zone separately). The Area Plan Commission handles land use permits, subdividing, and mobile home placement, and a new Unified Development Ordinance is being drafted. source
Dwellings, tiny homes & RVs
Unclear - verifyNo specific tiny-home minimum size or RV permanent-occupancy rule was confirmed in county materials; mobile home placement does require a Land Use Permit. Confirm details with the Area Plan Commission. source
Building permits & codes
Generally allowedThe Posey County Building Commissioner issues construction permits and enforces plumbing, electrical, mechanical, and structural codes outside Mt. Vernon, New Harmony, Poseyville, and Griffin, which administer their own permitting. source
Septic & composting toilets
Generally allowedThe Posey County Health Department approves sewage disposal systems for any dwelling not on public sewer, implementing the state's onsite sewage rule (410 IAC 6-8.3). Composting toilets specifically aren't addressed in county materials. source
Greywater reuse
Unclear - verifyNo Posey County-specific greywater ordinance was found; this appears to fall to the state baseline where greywater is generally treated as sewage requiring septic-system compliance. Ask the Health Department directly.
Rainwater harvesting
Unclear - verifyNo Posey County ordinance addressing rainwater harvesting was found; this inherits the state baseline, where no prohibition was identified, but nothing county-specific confirms it either way.
Private wells & water rights
Generally allowedDomestic wells are regulated statewide by the Indiana DNR Division of Water, generally without a permit requirement unless in the Great Lakes Basin or classified as a significant water withdrawal facility; no added Posey County well rule was confirmed. source
Living disconnected from utilities
Generally allowedNo Posey County ordinance mandating connection to public electric, water, or sewer was found. The Posey County Regional Sewer District is expanding service in some areas, but that reflects planned infrastructure, not a mandatory hookup law.
Sun30-year normals
- Peak-sun hours, annual average
- 4.9 hrs/day
- Worst month (sizes an off-grid array)
- 3.2 hrs/day
- Yearly output per 1 kW of panels
- 1,394 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 47 in/yr
- Heating degree days
- 4,723 (moderate)
How far help isstraight-line
- Hospital
Deaconess Hospital - 16.6 mi
- Fire station
Wadesville Volunteer Fire Station - 2.8 mi
- Hardware store
True Value - 12.8 mi
- Grocery
Schnucks - 13.9 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 47633).
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.