Off-Grid Living in Iosco County, Michigan

I've been digging into Iosco County, Michigan for readers thinking about buying land and living off-grid, and the first thing to understand is that Iosco County itself doesn't zone land. There's no countywide zoning ordinance. Instead, each township, AuSable, Iosco Township, Baldwin, Oscoda, and the rest, has its own zoning ordinance adopted under Michigan's Zoning Enabling Act (Public Act 110 of 2006). That means the rules for your specific parcel depend entirely on which township it sits in, and you genuinely have to check with that township, not just the county.

Where the County does step in directly is building codes. The Iosco County Building and Safety Inspection Department enforces the Michigan Residential Code and Michigan Building Code across the whole county, including inspections and permits. State law (the Construction Code Act, PA 230 of 1972) also makes clear you can't dodge licensing requirements on residential work by going around the permit process.

On dwellings, I found at least one township, AuSable, that explicitly prohibits using an RV, trailer, or portable building as a permanent single-family home. Iosco Township requires a zoning permit for any structure over a modest size. Michigan hasn't adopted the tiny-home-friendly Appendix Q, so a foundation-built tiny home there just falls under standard Residential Code rules. I couldn't confirm whether any township in the county allows RVs as full-time residences, so ask your specific township zoning office directly.

Septic and well permitting for the whole county runs through District Health Department No. 2 (DHD#2), a four-county health agency covering Alcona, Iosco, Ogemaw, and Oscoda. Michigan's Public Health Code (Part 127) lets a landowner install their own well, following the state's Water Well Construction and Pump Installation Code, with DHD#2 handling siting and permits. I couldn't find a DHD#2-specific policy on composting toilets as a septic alternative, so that's a call-and-ask situation.

Greywater reuse and rainwater harvesting don't appear to have any Iosco-specific ordinance. Both fall back to the state's Plumbing Code and Residential Code, administered by Michigan's LARA agency, with no extra county layer found.

The hardest question, living fully off-grid with no well and no septic at all, isn't explicitly banned anywhere I found, but it's also not clearly blessed. Since occupancy permits are tied to inspections that check for code-compliant water and sewage systems, a permitted dwelling likely needs to show an approved water/septic setup. Bare land without a permitted structure may have more flexibility, but that's purely a township zoning question.

Bottom line: county handles building codes and, through DHD#2, wells and septic. Your township handles zoning, land use, and dwelling type. Don't assume one level's answer covers the other.