Off-Grid Living in Montgomery County, Mississippi

I'll be upfront: Montgomery County, Mississippi is one of those places where the paper trail runs thin. I went looking for a county zoning ordinance, a building code adoption, and any rules on tiny homes or RVs on the county's own site (montgomerycountyms.com) and on the usual code hosts (Municode, eCode360, American Legal, Code Publishing). I didn't find any of that published officially. That doesn't necessarily mean there's a free-for-all out there, it means I can't confirm the rule one way or the other from public documents, so I'm marking those areas "not confirmed" rather than guessing.

Here's what that means practically. Mississippi doesn't require counties to adopt zoning, and a lot of small, rural counties like Montgomery simply haven't. If that holds true here, land use in the unincorporated county would fall under whatever the state default is, generally permissive for agricultural and rural land, but you should call the Board of Supervisors directly and ask point-blank whether zoning exists for your parcel. The same goes for building permits: I found no county building department or adopted residential code (IRC/IBC) referenced anywhere official. Mississippi has no mandatory statewide residential code either, so if the county hasn't adopted one, there may be no permit requirement in the unincorporated area, but that's a "may," not a confirmed fact.

Dwelling types (tiny homes, RVs, mobile homes) fall into the same gap. No county ordinance addresses them that I could find. If you're inside the incorporated limits of Winona or Duck Hill, though, different rules likely apply. Winona publishes its own ordinances online, and Duck Hill probably has its own local rules too, even though I couldn't locate an official Duck Hill site in this pass. Being inside town limits changes everything, so confirm your parcel's status first.

Where things get clearer is wastewater and water. Montgomery County is explicitly listed among the counties served by the Mississippi State Department of Health's on-site wastewater program, which means septic systems require an MSDH-administered permit and a site/soil evaluation, handled through the local county health office. Greywater isn't treated separately, it falls under that same MSDH wastewater framework, so plan on routing it through an approved system rather than assuming a standalone greywater setup is fine. Rainwater harvesting has no county restriction I could find, so it inherits the generally permissive state baseline, rain barrels and cisterns should be fine. Private wells are licensed at the state level, not by a distinct county water authority, though MSDH staff do handle well-water sampling and complaints locally.

Living fully off the utility grid isn't specifically addressed by the county, so it falls back to the broader state baseline, off-grid power generation is legal, but don't assume you have an unqualified "right" to disconnect from grid service if it's already run to your property. Bottom line: for anything land-use or building related, a phone call to the Board of Supervisors is your best move before you buy or build.