Off-Grid Living in Clay County, Tennessee

I'll be upfront: Clay County, Tennessee is one of those places where the official paper trail thins out fast. I looked hard for a dedicated Clay County planning/zoning, building department, or environmental health website and couldn't find one that's currently maintained and published online. That's not unusual for a small, rural Tennessee county (population is around 7,800, and Celina is the only incorporated town), but it means a lot of what follows is the Tennessee state baseline, with a clear flag anywhere the county-level answer is genuinely unconfirmed.

Zoning: Tennessee doesn't mandate zoning statewide, and plenty of rural counties skip it for unincorporated land. Whether Clay County itself has adopted a countywide zoning ordinance outside Celina, I could not confirm from any official source. Celina, as the only incorporated municipality, may run its own separate zoning that wouldn't touch county land outside town limits. Bottom line: call the county before you assume "no zoning."

Dwellings, tiny homes, RVs: No county ordinance on tiny homes or RV living turned up. At the state level, Tennessee's Department of Commerce and Insurance handles residential building permits directly in counties that haven't adopted their own code, and their guidance says a permit generally isn't required just to install a manufactured or modular home, though site work like a deck or porch can trigger one. Whether Clay County has opted in or out of that state code specifically for tiny homes isn't confirmed.

Building permits: Same story. The state's Chapter 0780-2-23 rules govern one- and two-family dwellings where the state administers permitting directly, and detached structures not used for living (sheds, barns, garages) generally don't need a state residential permit. I couldn't confirm whether Clay County enforces this state code as-is or has its own local process.

Septic: This one's more settled. Tennessee has been centralizing septic permitting under TDEC (the Department of Environment and Conservation), and neighboring rural counties have documented this shift explicitly, applications now go through tdec.tn.gov/septic rather than a local health department office. I couldn't independently confirm Clay County's exact current setup, but the statewide TDEC portal is the authoritative fallback. No composting-toilet exemption exists under state rules, composting toilets still need NSF Standard 41 certification, and any habitable structure still needs septic approval.

Greywater: State plumbing code technically allows subsurface greywater irrigation under state standards, but I found nothing county-specific, so treat this as unclear pending a call.

Rainwater: No restriction found at state or county level, so this looks permitted by default.

Wells: Governed by the statewide Tennessee Water Well Act and TDEC's groundwater program; you'll need a state-licensed driller. No Clay County-specific add-on requirement was confirmed.

Utilities: Going off-grid electrically is unrestricted statewide. Water/sewer could be a different story if your parcel sits inside Celina's service area, since municipal connection ordinances sometimes require hookup, but I didn't locate that ordinance. Outside town limits, the state septic/well framework above is what applies.

My honest recommendation: start with the county government's main line and ask them to route you to whoever currently handles zoning, building, and septic questions, since the usual online paper trail just isn't there for Clay County.