Off-Grid Living in Cass County, Michigan

I'll be upfront: Cass County, Michigan is one of those places where the county itself doesn't do much of the zoning heavy lifting. There's no countywide zoning ordinance here. Under the Michigan Zoning Enabling Act, that authority sits with each individual township, village, or the City of Dowagiac. The county's Planning Commission mostly checks that a township's zoning actions line up with that township's own master plan, it doesn't issue permits or set land-use rules itself.

Zoning and dwellings. Whether you can put a tiny home, RV, or unconventional dwelling on raw land depends entirely on which township you're in, Milton, Volinia, Penn, wherever. Some townships reference the state's manufactured housing law (P.A. 96 of 1987) in their own ordinances, but I couldn't confirm specific RV-as-residence rules at the county level. You genuinely have to call the township zoning office for your parcel.

Building permits. Same story: townships, villages, and the City of Dowagiac each administer their own building, mechanical, plumbing, and electrical permits, using Michigan's state-adopted codes. One useful state-level detail: Michigan's licensing law lets a homeowner act as their own general contractor for a single-family home they'll occupy, which can simplify owner-builder projects.

Septic and wells. This is where the county (via the joint Van Buren/Cass District Health Department) actually has teeth. No occupancy permit gets issued for a new habitable structure until the Health Department signs off on septic. Septic tanks and absorption fields get inspected before backfilling, and the county's on-site sewage rules cover tank sizing for both blackwater and greywater, though I didn't find a standalone greywater-reuse permit process separate from the general wastewater rules. Wells follow the same path, the district Health Department handles site evaluation, design approval, permitting, and final inspection.

Rainwater harvesting doesn't appear to have any Cass County-specific rule; it defaults to Michigan's statewide plumbing code baseline, so I'd call that unconfirmed at the local level rather than assume it's wide open.

Going fully off-grid. Nothing bans off-grid power generation outright, but going off-grid on water and waste is a different matter: the Health Department's occupancy sign-off requirement for sanitary facilities means you likely need an approved septic and well system (or public equivalent) before a new home can be legally occupied, even if you never touch the electric grid.

If you're eyeing land near a lake, stream, or planning to disturb more than an acre, the Cass County Conservation District now runs the Soil Erosion & Sedimentation Control Program and requires a permit before earth-moving work in those situations.

Bottom line: start with your township, not the county, for zoning and building questions, then loop in the Van Buren/Cass District Health Department early for septic and well planning since that approval gates occupancy.