Off-Grid Living in Carroll County, Missouri

I'll be upfront: Carroll County, Missouri is actually a bit unusual among rural Missouri counties because it has adopted countywide zoning, administered by the Carroll County Planning and Zoning Commission and a Zoning Administrator. A lot of rural Missouri counties never bother with zoning at all, so if you're moving from one of those, don't assume Carroll County will be as hands-off.

Zoning. The county's zoning ordinance sets up districts, including an Agricultural district meant for farming, forestry, and related uses, plus setback and lot-coverage rules and floodplain provisions tied to FEMA maps. If you're buying raw land here, expect to deal with the Zoning Administrator on district classification before you build anything.

Dwellings, tiny homes, RVs. I couldn't confirm any specific rule on minimum house size, tiny homes, or living in an RV long-term in the unincorporated county. The ordinance talks about permits and dimensional standards but doesn't spell out tiny-home or RV occupancy in what I found. If your land is inside Carrollton town limits, the Town of Carrollton has its own Planning and Zoning Commission and could have separate, stricter rules, so check that first if you're anywhere near town.

Building codes. Missouri doesn't require a statewide building code, and I found no confirmation that Carroll County has adopted the IRC, IBC, or similar countywide. The zoning ordinance references permits and a Zoning Administrator, but whether there's a distinct building-permit function is not confirmed. Call the county to ask directly.

Septic. This one's worth knowing: Carroll County has a stated policy of not adopting any ordinance more restrictive than what the Missouri Department of Natural Resources (DNR) and EPA require. In practice, septic systems (OWTS) are regulated under state minimum standards set by the Missouri Department of Health and Senior Services (DHSS), with your local Carroll County Health Department handling permit issuance. Composting toilets aren't separately addressed anywhere I found.

Greywater and rainwater. Neither is specifically addressed by county ordinance. Given the county's "no more restrictive than state/federal" stance, I'd expect these to just follow whatever baseline state rule exists (which for rainwater harvesting is generally permissive), but this isn't explicitly confirmed for Carroll County, so ask the Health Department directly.

Wells. Well construction is a state matter, governed by DNR under the Water Well Drillers Act and Missouri's well construction rules. The Carroll County Health Department handles local well/septic complaints, consistent with how most Missouri counties operate.

Off-grid utilities. I found no county ordinance requiring hookup to public water, sewer, or electric. Combined with the county's general "don't exceed DNR/EPA" posture, living disconnected from utilities appears permitted, subject to septic and well rules noted above.

Bottom line: Carroll County leans on the state for most of the environmental heavy lifting, but it does have its own zoning layer that a lot of similar counties skip, so don't skip that step.