Off-Grid Living in Anderson County, Tennessee

Anderson County, Tennessee is a bit of an outlier among rural TN counties in that it actually has countywide zoning outside its towns. If you're picturing wide-open unregulated land here, adjust that expectation before you buy.

Zoning. The Anderson County Planning Commission administers a countywide Zoning Resolution that applies to unincorporated areas (outside Oak Ridge, Clinton, Norris, and Rocky Top, which each run their own zoning and codes). There's an Agricultural-Forestry (A-1) district meant to preserve land for farming and forestry, which is often the most flexible zone for off-grid style living, but you still need to check what's allowed on your specific parcel with the Planning Commission before assuming you can put up whatever you want.

Dwellings, tiny homes, RVs. The county enforces the 2018 ICC building codes, primarily for safety. I could not find an official Anderson County page that specifically addresses tiny homes under Appendix Q or long-term RV living as a permanent dwelling. That's a real gap, and it means you should call Building and Codes Enforcement directly and ask how they'd treat your specific structure before you commit money to a plan.

Building permits. The county's own page states permits are required for structures over 100 square feet or costing $1,000 or more, going through the Building and Codes Enforcement office. This is stricter than some rural counties that opt out of code enforcement entirely, so don't count on flying under the radar here.

Septic. The Anderson County Health Department handles septic permitting, starting with a site evaluation by a certified inspector, and it requires backhoe pits for all evaluations. I found no county-specific exemption for composting toilets or dry cabins, so the state's baseline expectations likely apply by default, but confirm directly with the Health Department since this wasn't spelled out in an official county document I could locate.

Greywater. No county-specific greywater ordinance or guidance turned up in my research. The state plumbing code baseline would likely apply, but I'd call the Health Department or TDEC to get specifics before designing a system.

Rainwater. Nothing in county sources restricts rainwater harvesting, and Tennessee state law generally permits it without restriction. This is one of the more straightforward yeses here.

Wells. Wells fall under the state's Water Well Act, administered by TDEC's Division of Water Resources, which requires a licensed driller. Tennessee doesn't mandate water quality testing for private supplies, and I found no additional county-level well permit beyond the state's process.

Utilities. I found no Anderson County ordinance forcing a grid electric hookup. Sewer connection mandates, if they exist, would come from local utility districts like the North Anderson County Utility District rather than county government, but I couldn't confirm specifics for unincorporated land.

Bottom line: this county actually zones and enforces building codes, which is different from many off-grid-friendly TN counties. Confirm everything with the Planning office and Health Department before you buy land or build.