Off-Grid Living in Grainger County, Tennessee

I'll be upfront: Grainger County, Tennessee is one of the more wide-open counties I've researched for off-grid purposes, but that openness comes with real gaps in official documentation, so please read the caveats carefully.

Zoning and raw land. Grainger County has no countywide zoning ordinance. The Grainger County Planning Commission, acting under state authority (Tennessee Code Annotated 13-3-401 through 13-3-411), only administers subdivision regulations, that is, rules about dividing and platting land, not use-district zoning. Those subdivision rules apply everywhere in the county except inside the town limits of Bean Station, Blaine, and Rutledge, which may run their own zoning. Practically, this means simply living on raw, undivided land isn't restricted by a county zoning code, though if you ever subdivide, the Planning Commission gets involved.

Dwellings, tiny homes, RVs, and building permits. Here's where I have to be honest about a gap: I could not find an official Grainger County page describing a building permit program, an adopted building code, or specific rules for tiny homes or RVs as residences. The county's own website only covers subdivision platting. That doesn't necessarily mean anything goes, it means the rule isn't published where I could verify it. Anyone building or living in an RV full-time should call the county directly, and also check with the town hall if the parcel sits inside Bean Station, Blaine, or Rutledge, since those towns could have their own permitting separate from the county.

Septic and composting toilets. This one is clearer because it's a state function. Septic systems statewide, including in Grainger County, fall under the Tennessee Department of Environment and Conservation's Subsurface Sewage Disposal Program. Some neighboring county health departments (Greene County, for example) have publicly stated they no longer process septic permits at all and route everyone through TDEC's online portal at tdec.tn.gov/septic. I couldn't confirm Grainger County's exact local arrangement, but the state program controls either way. No county-specific composting toilet exemption turned up, so assume the state's NSF 41 standard applies.

Greywater, rainwater, wells, utilities. No Grainger County or town ordinance addressing greywater reuse, rainwater harvesting, or private wells was found, so these default to Tennessee's state baseline: rainwater collection is unrestricted, wells must be drilled by a state-licensed driller under the Tennessee Water Well Act, and greywater falls under the state plumbing code's general allowances. Similarly, I found nothing compelling utility hookups if you'd rather live disconnected.

Bottom line: Grainger County leaves a lot unregulated on paper, but "unregulated on paper" and "confirmed safe" aren't the same thing. Call the Planning Commission and the Mayor's office before you commit to a plan.