Off-Grid Living in Dyer County, Tennessee

I've been digging through Dyer County, Tennessee's official records for anyone considering an off-grid setup here, and the short version is: this county isn't a "no rules" rural pocket like some parts of Tennessee. It actually has countywide zoning and active building permitting, which changes the calculus compared to counties that have opted out of state building codes.

Zoning. Dyer County adopted its own Zoning Resolution (through the Quarterly County Court, most recently amended in 2019) that establishes zoning districts covering setbacks, building height, and land use across the unincorporated county. This is administered by the Dyer County Building & Zoning Office, with a Planning Commission and Board of Zoning Appeals handling variances. So raw land here isn't a blank slate. You'll want to know your parcel's district before you plan anything.

Dwellings, tiny homes, RVs. I did not find a Dyer County document that specifically spells out rules for tiny houses on wheels or RV living. What is clear is that the county requires a building permit for new construction, including mobile and modular homes, additions, and accessory buildings. For anything nonstandard, calling the Building & Zoning Office directly before you buy or build is genuinely the only way to know where you stand.

Building permits. Dyer County has not opted out of code enforcement, and it requires permits for essentially all construction. Notably, the county says you need your septic (sewage) permit and a 911 address in hand before you can even submit a building permit application, so sequencing matters.

Septic. Septic systems statewide fall under Tennessee Code Title 68, Chapter 221, Part 4, administered by TDEC. Tennessee has been shifting some counties' septic application intake from local health departments to a centralized TDEC online portal. I couldn't confirm which process currently applies in Dyer County, so check with TDEC or the county before assuming either path.

Greywater. No Dyer County ordinance turned up on this, which means it defaults to whatever the state plumbing code framework says. Consider this unclear until confirmed with the state or the county building office.

Rainwater. Nothing at the state or county level restricts rainwater harvesting that I found. This appears to be permitted by default.

Wells. Well drilling is a state matter here, run through TDEC's Division of Water Resources under the Tennessee Water Well Act. Anyone drilling needs a state-licensed driller, and a Notice of Intent has to be filed with the state before drilling starts. No added Dyer County layer surfaced in my research. Tennessee doesn't mandate private well water testing; that's typically a lender requirement, not a state one.

Utilities. No Dyer County rule forces you to hook up to electric, water, or sewer in unincorporated areas. If you're inside Dyersburg or the Town of Dyer's limits, municipal code would take over, but that's a different jurisdiction entirely.

Bottom line: Dyer County is more regulated than the "wild west" reputation some rural TN counties have. Call the Building & Zoning Office early, before you buy land, not after.