Off-grid site report

Fayette County, OH

39.5234, -83.4580 · 978 ft elevation
Read this before you act on anything below. This is my researched starting point for Fayette County, OH, 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 rulesFayette County, OH

Zoning & raw-land occupancy
Varies locallyFayette County has no single countywide zoning code; each township (e.g. Jefferson, Union) adopts its own resolution under Ohio Revised Code Chapter 519, and Washington Court House zones separately. Check with the Fayette County Zoning office or the specific township. source
Dwellings, tiny homes & RVs
Varies locallyOhio state law protects permanently sited manufactured homes from township bans in residential districts, but townships may restrict travel trailers, park trailers, and non-permanent mobile homes; RV/tiny home full-time residency rules are set township by township and weren't confirmed countywide.
Building permits & codes
RestrictedThe Fayette County Building Department enforces the Ohio Building Code and Residential Code of Ohio countywide (except inside Washington Court House, which has its own department), and permits are required for new construction, additions, and other work.
Septic & composting toilets
Generally allowedSeptic systems need a permit, a certified installer, and inspection by Fayette County Public Health, which administers this countywide. source
Greywater reuse
Unclear - verifyGreywater likely falls under the state framework Fayette County Public Health administers for onsite sewage, but no Fayette-specific greywater policy or fee schedule was found; ask the health department's Environmental Health division directly.
Rainwater harvesting
Unclear - verifyNo Fayette County-specific rainwater harvesting or cistern policy was found; it likely falls under the state's private water systems rules administered by the county health department, but this is not confirmed locally.
Private wells & water rights
Generally allowedPrivate wells are permitted but require approval from Fayette County Public Health's Environmental Health division, and that sign-off is needed before a building permit is finalized.
Living disconnected from utilities
Unclear - verifyNo county rule explicitly requires or bans full-time off-grid living without utility hookups, but occupancy still requires a Certificate of Use & Occupancy from the Building Department and an approved well/septic system from the health department.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average
4.6 hrs/day
Worst month (sizes an off-grid array)
2.7 hrs/day
Yearly output per 1 kW of panels
1,313 kWh
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Weather1991-2020

Precipitation
40 in/yr
Snowfall
20 in/yr
Heating degree days
5,451 (moderate)
Frost-free season
Apr 18 to Oct 21

How far help isstraight-line

Hospital
Adena Fayette Medical Center
2.4 mi
Fire station
Washington Fire
1.4 mi
Hardware store
The Home Depot
0.2 mi
Grocery
Walmart Supercenter
0.1 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 43160).

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.