Off-Grid Living in Fayette County, Ohio

I'll level with you up front: Fayette County, Ohio doesn't have one master rulebook for off-grid living. It's a patchwork, and figuring out what applies to a specific parcel means figuring out which authority actually has jurisdiction there.

Zoning is township-by-township, not county-wide. Fayette County itself doesn't have a unified zoning code. Instead, individual townships (Jefferson Township, Union Township, and others) each adopt their own zoning resolutions under Ohio Revised Code Chapter 519, and the City of Washington Court House runs its own separate zoning department. So before you buy land, I'd check which township it sits in and pull that township's zoning resolution from the Fayette County Zoning office's site.

Dwellings, tiny homes, and RVs are also township-dependent, with one state-level protection. Ohio state law says townships can't ban a "permanently sited" manufactured home from any district where a single-family home is allowed, but townships CAN restrict travel trailers, park trailers, and non-permanently-sited mobile homes. What counts as "permanently sited" and whether RVs or tiny homes can be lived in full-time is set at the township level (Jefferson Township's resolution defines it, for example), so this genuinely varies parcel by parcel.

Building permits ARE countywide, administered by the Fayette County Building Department, using the state's Ohio Building Code and Residential Code of Ohio, except inside Washington Court House, which has its own building/zoning department. New construction, additions, and even things like solar installs need a permit through whichever office has jurisdiction.

Septic, wells, and greywater are handled countywide by Fayette County Public Health. Any septic system needs a permit, a certified installer, and a health department inspection. Wells fall under the same "Private Water Systems" service area and also need sign-off before a building permit is finalized. Greywater and rainwater harvesting likely fall under the same state framework (Ohio's sewage and private water system rules), but I did not find a Fayette-specific policy spelling out details for either, so confirm directly with the health department if that's part of your plan.

Full-time off-grid living (no utility hookups) isn't explicitly addressed by any county ordinance I found. But practically speaking, you'll still need a Certificate of Use & Occupancy from the Building Department before living in a structure, and any plumbing requires an approved well/septic setup through the health department. So "off-grid" here likely means self-supplied water and waste systems that are still permitted and inspected, not a total absence of oversight.

Bottom line: this is a county where the township you land in matters as much as the county government, so start with a phone call before you assume anything.