Off-Grid Living in Hancock County, Tennessee

I'll be upfront: Hancock County, Tennessee is one of the harder places for me to research because there's just not much official documentation online. The county's own website is thin, there's no Municode or eCode360 listing I could find, and no county building department page. So a lot of what follows is the Tennessee state baseline filling in gaps, and I've flagged every place that's true.

Zoning. Hancock County adopted Subdivision Regulations back in 2021, per the county Planning Commission's own page, which govern how land gets divided and requires infrastructure like water, drainage, and sewage provisions when you subdivide. But that's not the same as a countywide use-zoning ordinance with districts and setbacks, and I found no official source confirming one exists. Many rural East Tennessee counties simply don't have general zoning, so if you're buying raw land to live on quietly rather than subdivide, you may be operating in a genuinely unregulated space, but I can't confirm that one way or the other for Hancock County specifically. Call the Planning Commission before you assume anything.

Dwellings, tiny homes, RVs, and building permits. No official Hancock County ordinance text on tiny homes, RVs, or building codes turned up anywhere. Tennessee's state building code framework (including Appendix Q for tiny houses) applies by default unless a county has opted out, and whether Hancock County has opted out is simply not something I could confirm from an official source. Don't take a rumor as fact here, ask the county directly.

Septic and composting toilets. This one I can speak to with more confidence. Hancock County is not one of the nine Tennessee counties that run their own septic programs (Blount, Davidson, Hamilton, Jefferson, Knox, Madison, Sevier, Shelby, Williamson are the exceptions). That means septic permits for Hancock County route directly through the state, the Tennessee Department of Environment and Conservation's Division of Water Resources, not a local health department office. You apply through TDEC's statewide septic system. There's no confirmed dry-cabin or composting-toilet exemption at either level, so the state's NSF 41 composting toilet standard still applies.

Greywater. No Hancock County-specific rule found. State plumbing code technically permits greywater reuse with conditions (subsurface application, holding tanks, short storage windows), but I couldn't confirm how, or whether, that's enforced locally.

Rainwater harvesting. Nothing restricts it at the state level, and I found no Hancock County rule that changes that. This is one of the more solidly "permitted" answers in this brief.

Wells. State-regulated under the Tennessee Water Well Act; wells need a state-licensed driller. TDEC's Environmental Field Office network is your official starting point for questions specific to your parcel.

Utility disconnection. No county ordinance found requiring hookup to water, sewer, or electric. Given how rural and largely unincorporated Hancock County is outside Sneedville, broad utility mandates seem unlikely, but that's my inference, not a confirmed fact.

Bottom line: for the big legal risk item, septic, you're dealing with the state directly. For everything else, this is a county where "not confirmed" means exactly that, so a phone call before you commit to land or a build plan will save you real trouble.