Off-Grid Living in Wayne County, Tennessee

I'll level with you up front: Wayne County, Tennessee was one of the tougher places I've researched, because I could not find an official Wayne County planning/zoning department, building department, or environmental health webpage. That's not unusual for rural Tennessee counties, but it means most of what I can tell you here defaults to the Tennessee state baseline, with a clear note whenever a rule I found only applies inside the City of Waynesboro (the county seat), not out in the unincorporated county where most off-grid land sits.

Zoning. Tennessee counties aren't required to adopt zoning at all, and I found no Wayne County zoning resolution. The City of Waynesboro has its own zoning and flood-hazard ordinance, but that only governs land inside city limits. Outside the city, I can't confirm whether any zoning applies to your parcel, so check with the county directly.

Dwellings and building codes. Waynesboro has opted into the state's residential building inspection program, meaning permits and inspections for one- and two-family homes inside the city follow the 2009 International Residential Code as adopted by Tennessee. Counties can opt out of this program by a two-thirds vote of their legislative body, and I could not confirm whether Wayne County has done so. That matters a lot for tiny homes, RVs as dwellings, and owner-built cabins, so this is a must-ask question for the county.

Septic. Wayne County is not one of the nine Tennessee counties (Blount, Davidson, Hamilton, Jefferson, Knox, Madison, Sevier, Shelby, Williamson) that run their own septic programs. That strongly suggests septic permitting here runs directly through the state agency, TDEC, using their standard subsurface sewage disposal permitting and inspection process. I'd treat this as the working assumption until the county tells you otherwise. Composting toilets still need to meet the state's NSF 41 standard.

Greywater, rainwater, wells. I found no Wayne County-specific rules on any of these. Rainwater harvesting is unrestricted at the state level and I found nothing local to change that. Greywater reuse follows the state plumbing code's subsurface-irrigation allowances, though local enforcement clarity is unconfirmed. Private wells fall under the statewide Water Well Act, requiring a licensed driller, with no additional county layer that I could find.

Utilities. Going off-grid electrically is unrestricted statewide, and I found no Wayne County ordinance requiring water or sewer hookup. Any hookup mandate would more likely be a Waynesboro city rule than a county one.

Bottom line: for anything outside Waynesboro city limits, plan to call the county directly to nail down zoning and building-code status before you commit to a piece of land.