Off-Grid Living in Montcalm County, Michigan

I'll be upfront: Montcalm County, Michigan is one of those places where "it depends" is the honest answer more often than not, because the county itself doesn't do countywide zoning. That single fact shapes everything below.

Zoning is a township matter, not a county matter. Montcalm County has no countywide zoning ordinance. Instead, each zoned township within the county writes and enforces its own rules, and issues its own zoning permits. So whether you can camp on raw land, park an RV as a residence, or build a small cabin depends on which township your parcel sits in. The county's Zoning Administrators list simply routes you to the right township contact, it doesn't set the rules itself. If you're shopping for land, call the specific township before you fall in love with a parcel.

Dwellings, tiny homes, and RVs follow the same pattern: county building permit materials point RV-pole and temporary-pole questions straight to the township. Michigan's state code baseline (the 2015 Michigan Residential Code) applies unless a township has adopted something more flexible, and I found no evidence Montcalm County has adopted Appendix Q (the tiny-home provisions some states add). I couldn't confirm any township that treats an RV or tiny home as a legal permanent residence, so ask directly.

Building permits are handled by the Montcalm County Building Department in townships that don't have their own enforcement. They administer Michigan's State Construction Code (Act 230 of 1972, incorporating the 2015 Michigan Building and Residential Codes) and issue building, electrical, plumbing, and mechanical permits. Most new construction, additions, garages, sheds over a small size, decks, pools, and mobile home placements need a permit. If you're building within 500 feet of a lake, river, or stream, add a Soil Erosion and Sedimentation Control (SESC) permit, also through the Building Department, per state EGLE rules.

Septic and wells are not handled by the county at all. That job belongs to the Mid-Michigan District Health Department (MMDHD), which covers Montcalm, Clinton, and Gratiot counties. Any septic system needs an approved MMDHD permit, and building without one carries penalties under their environmental health regulations. Composting toilets and privies aren't banned outright, but MMDHD's rules require them to sit a set distance from dwellings, and I'd treat any alternative system as something to clear with MMDHD first. Wells work the same way: MMDHD sends a sanitarian to evaluate the site before approving a permit.

Greywater and rainwater harvesting have no Montcalm County or MMDHD-specific ordinance that I could find. That means the state's baseline plumbing code rules likely apply by default, but I'd call MMDHD or the county Building Department to confirm before installing anything, rather than assume silence means permission.

Full utility disconnection isn't explicitly banned in county documents, but in practice it's hard to do legally: occupancy typically requires an approved water supply and sewage system, and running sewage disposal without an MMDHD permit is a violation. Any additional occupancy requirements (like mandatory hookups) would come from your township, not the county.

Bottom line: Montcalm County sets building and SESC rules and delegates septic/well permitting to MMDHD, but zoning, and therefore a lot of what off-grid living actually looks like day to day, is a township-by-township decision.