Off-Grid Living in Carter County, Tennessee

I've been digging into what off-grid living actually looks like in Carter County, Tennessee, and the short version is: this county is more regulated than the "no zoning, do what you want" reputation rural Tennessee sometimes gets. Here's what I found, and what I'd still confirm before you buy land or start building.

Zoning is real here. Unlike a lot of Tennessee counties that skip zoning entirely, Carter County has countywide zoning administered by its own Regional Planning Commission and Planning & Zoning Office. The county's zoning resolution splits land into eleven district types (Agriculture, Residential, Business, Industrial, etc.), and the rule is straightforward: you can't build, move, or use land or structures for anything other than what's expressly allowed in that district. So before you buy a parcel thinking you can put anything on it, check which district it sits in.

Tiny homes have their own county rule. Carter County apparently amended its zoning resolution specifically to address tiny homes, defining one as a single-family dwelling between 200 and 400 square feet that has to be site-built or prefab, but permanently anchored to a foundation. I'll flag that the numeric detail here came from a local news report, not something I could verify directly on the county's own website, so call the Planning & Zoning Office to confirm the current resolution text before you plan around it. RV or long-term mobile dwelling rules weren't confirmed in any official source I found, so ask directly if that's your plan.

Building permits are actively enforced. The county's Planning Office reviews and approves residential building permits, and the checklist requires things like a driveway connection agreement from the Highway Department and either a septic construction permit or proof of an existing septic system from the state.

Septic and wells are a state matter, not a county health department matter here. Carter County doesn't run its own environmental health office for this. Instead, everything routes to TDEC's Johnson City field office, which issues septic construction permits under the state's subsurface sewage disposal rules and also handles well and water resource permitting under the Tennessee Safe Drinking Water Act. Composting toilets don't appear to have a specific county exemption, so the state's standard baseline likely applies.

Greywater and rainwater don't have county-specific ordinances that I could find. Rainwater collection appears unrestricted, following the generally permissive state approach. Greywater reuse is murkier, it just defers to the same ambiguous state septic/plumbing framework, so I'd treat it as unclear rather than clearly permitted.

Utility disconnection looks fine in unincorporated parts of the county, no ordinance forcing hookup to public utilities that I found. That picture likely changes if you're inside Elizabethton town limits, which runs its own building and codes department separate from the county.

Bottom line: Carter County is workable for off-grid living, but it's not a regulatory vacuum. Zoning district, building permits, and state-level septic/well permits are all real hurdles you'll need to clear, and a phone call to the county Planning Office before you commit to land is worth the time.