Off-grid site report

Franklin County, OH

39.9557, -82.9023 · 768 ft elevation

Read this before you act on anything below. This is my researched starting point for Franklin 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 rulesFranklin County, OH

Zoning & raw-land occupancy

Varies locallyIn unincorporated Franklin County townships, the county's Planning & Zoning Division administers the Franklin County Zoning Resolution. But most of the county's land is inside cities and villages like Columbus, Dublin, Hilliard, and Grove City, which run their own zoning codes entirely separate from the county. Check the Franklin County Auditor's site to see if your parcel is incorporated or unincorporated before assuming which rulebook applies. source

Dwellings, tiny homes & RVs

Varies locallyManufactured and site-built homes are governed by district rules in the Franklin County Zoning Resolution, including a Planned Manufactured Housing Residential District, but a state law resource notes that unincorporated county areas are generally a friendlier bet for manufactured housing than cities, which can set their own stricter rules. I couldn't confirm a specific county tiny-house ordinance, so treat tiny homes on foundations as falling under the same manufactured/site-built rules, and permanent RV dwelling as generally restricted by district use rules; confirm specifics with the Zoning Division. source

Building permits & codes

RestrictedIn unincorporated townships, the Franklin County Building Department handles permits and inspections under the state building code, while incorporated cities like Hilliard run their own separate permitting departments. Either way, expect to need permits for new construction, not an off-grid exemption. source

Septic & composting toilets

Generally allowedFranklin County Public Health administers household sewage treatment system permits under the state sewage code, and importantly, a septic system can't be sited where a sanitary sewer is already accessible, and if sewer later becomes accessible to a home on septic, the county can require hookup and abandonment of the septic system. Composting toilets aren't separately addressed on the county's page, so that piece is not confirmed; ask Franklin County Public Health directly.

Greywater reuse

Unclear - verifyI could not find a Franklin County-specific greywater ordinance. The same Public Health office that handles septic permits would be the one to ask whether it has added local greywater standards on top of the state's Ohio Administrative Code baseline; not confirmed either way.

Rainwater harvesting

Unclear - verifyNo Franklin County-specific rainwater or cistern ordinance turned up in my research. The private water system permitting office would likely be the point of contact for any local cistern rules, but I couldn't confirm the county has added anything beyond the state code, so check directly with Franklin County Public Health.

Private wells & water rights

Generally allowedFranklin County Public Health issues private water system permits and also handles well abandonment coordination alongside the county's Sanitary Engineer when a well is decommissioned. This is the office to call before drilling or decommissioning a well.

Living disconnected from utilities

Unclear - verifyI found no explicit countywide rule forcing you onto the electric grid, but the sewage code does require connecting to sanitary sewer once it's accessible, and Franklin County Public Health can force a septic-to-sewer connection decision if your system affects the county's storm sewer system. So full off-grid living on water/sewer isn't guaranteed even if you avoid the electric grid; confirm specifics with Franklin County Public Health and, if you're in a city or village, with that municipality's own utility office.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 4.5 hrs/day
Worst month (sizes an off-grid array): 2.7 hrs/day
Yearly output per 1 kW of panels: 1,293 kWh

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Weather1991-2020

Precipitation: 40 in/yr
Snowfall: 21 in/yr
Heating degree days: 5,473 (moderate)
Frost-free season: Apr 23 to Oct 14

How far help isstraight-line

Hospital Grant Medical Center: 4.7 mi
Fire station Violet Township Fire Station 593: 6.0 mi
Hardware store Premium Hardware Showroom: 3.7 mi
Grocery Save-A-Lot: 0.9 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 43227).

Size a solar system Heat loss & insulation Firewood per winter Rainwater harvest Garden size Panel tilt

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.