Off-Grid Living in Harrison County, Ohio

Harrison County, Ohio is one of the more wide-open corners of the state when it comes to off-grid living, but "wide open" doesn't mean "unregulated" once you dig past zoning. Here's what I found researching official county and state sources.

Zoning is the big variable. Harrison County itself has no countywide zoning code. That's set at the township level under Ohio law (townships can opt in to zoning, they aren't required to). Only five jurisdictions in the county have adopted zoning: Archer Township, Cadiz Village, Freeport Township, Moorefield Township, and North Township. If your land sits outside those five, there's no local zoning authority to ask permission from on land use. If it's inside one of them, that township or village's zoning rules govern and you'll need to check with them directly. Either way, this doesn't exempt you from building and health department rules, which run countywide regardless of zoning status.

Building permits are handled through the county's permitting process, with the Harrison County Community Improvement Corporation office in Cadiz involved in that workflow. I didn't find local amendments to the state Residential Code of Ohio published on the county site, so assume the state code baseline applies and confirm specifics with that office.

Septic systems are countywide business through the Harrison County General Health District (also doing business as Harrison Public Health). They handle design review, permitting, and inspection of sewage treatment systems, working off Ohio Administrative Code 3701-29 plus a county resolution that supplements the state rule. There are setback requirements in the county's septic packet, for example distance from private water sources and from lot lines, so get the current packet from the health district before you plan a leach field. Composting toilets aren't separately addressed in what I found, so I'd call the health district directly to ask how they're treated.

Wells and rainwater/cistern systems both fall under the "private water systems" umbrella that the Harrison County Health Department administers, following state law (ORC 3701.344-347, OAC 3701-28). That framework covers wells and auxiliary supplies like cisterns for houses, barns, small businesses, and more. Permits run through the health department.

Greywater isn't separately called out at the county level; treat it as governed by the same state-based sewage/water framework the health district administers, and ask them how they handle greywater specifically before installing a system.

Full utility disconnection (no grid electric, no municipal water/sewer) isn't explicitly addressed pro or con in any Harrison County document I found. In practice, this means your dwelling still needs to satisfy building code and, if applicable, septic/well permitting, but there's no found ordinance forcing a hookup to utilities.

Bottom line: this is a county where the paperwork bottleneck is mostly at the Health District, not zoning, unless you're in one of the five zoned jurisdictions. Confirm details directly rather than assuming.