Off-Grid Living in McMinn County, Tennessee

I've been digging into McMinn County, Tennessee for anyone thinking about going off-grid there, and the honest answer is: it's more workable than a lot of counties, but it's a patchwork, not a single clean rulebook. Here's what I found, dimension by dimension, and who I'd call to confirm before you buy land or start building.

Zoning. McMinn County doesn't appear to have a comprehensive countywide use-zoning map the way a city does. What it does have is a Regional Planning Commission (MCRPC) that controls land through subdivision regulations, plat approval, road frontage requirements, that sort of thing. If you're buying a raw parcel outside a platted subdivision, general "can I live here and do what I want" zoning restrictions are not confirmed at the county level, but if you're splitting or platting land, MCRPC is the authority. The incorporated towns (Athens, Etowah, Englewood, Niota) run their own separate zoning through city hall.

Dwellings, tiny homes, RVs. The county has a specific Mobile Home/RV resolution. It defines what counts as a "mobile home park" and requires either public sewer, a septic tank, or an approved treatment plant for those placements. So if you're putting an RV or mobile home on land, plan for a real wastewater solution, not a workaround. Site-built tiny homes under the state's Appendix Q provision aren't addressed anywhere I found at the county level, so that's a call to make to the permit office.

Building permits. The county's own site lists electrical permits, septic permits, and floodplain information as things you need to get. I could not confirm, from official sources, whether McMinn enforces the state residential building code generally for one- and two-family homes. Don't take a permit-aggregator website's word for it, call the county.

Septic. McMinn is not one of the handful of Tennessee counties that run their own septic program, so this is fully a state process through TDEC's Division of Water Resources and the local Environmental Field Office. No dry-cabin or composting-toilet exemption from what I found, that's the state baseline applying in full.

Greywater and rainwater. No McMinn-specific ordinance on either. Both inherit the state baseline: rainwater collection is unrestricted, greywater reuse is technically allowed under the state plumbing code framework but enforcement guidance is thin.

Wells. Governed by the state Water Well Act, drilled by state-licensed drillers, no additional county well permitting found.

Utilities. Going off the electric grid isn't restricted, and I found no county mandate to connect to public water or sewer on rural parcels. The one catch: if you're in mobile home/RV territory, that Mobile Home/RV Resolution still requires an approved wastewater method even without a public sewer hookup.

Bottom line: this is a county where you'll be calling more than one office, and the state fills in a lot of the gaps the county leaves open.