Buying Land in Monroe County, Michigan

Zoning: no countywide ordinance -- the township or city decides

Monroe County follows Michigan's standard township-primary pattern: there is no countywide zoning or development ordinance. Rezoning and zoning-district decisions happen entirely at the township or city level -- an application is filed at the township hall, the township planning commission holds a public hearing and makes a recommendation, and the township board makes the final decision. Monroe Charter Township and Milan Township are both confirmed examples with their own posted, independently-administered zoning ordinances. The county's own Community Planning & Engagement division exists, but its role is coordinating and advisory -- studies and surveys, grant preparation, economic-development assistance, and helping coordinate planning across townships -- not administering zoning itself. Confirm the specific zoning district and requirements directly with the township or city your parcel is in, not the county.

Fermi 2: a nuclear plant and its emergency planning zone

The Fermi 2 nuclear power plant, operated by DTE Energy, sits on roughly 1,260 acres in Frenchtown Charter Township, about six miles northeast of the city of Monroe. As required by the Nuclear Regulatory Commission and FEMA for any operating nuclear plant, a 10-mile Emergency Planning Zone (EPZ) surrounds the site, and Monroe County maintains its own nuclear-hazards emergency-preparedness materials for residents within that zone. This is an emergency-response planning boundary -- covering things like evacuation routes and public notification -- rather than a zoning restriction on what can be built, and this page did not find a specific land-use or building restriction tied to the EPZ itself. Still, it's worth being aware of for land in or near Frenchtown Township: ask the county's emergency management office what the EPZ means in practice for a specific parcel, particularly if proximity to the plant matters to you.

The area around the plant, and Monroe County generally, remains predominantly agricultural -- roughly 70 percent of the county is farmland, with most industrial activity concentrated in and around the city of Monroe itself. Nearly 600 acres of the Fermi site are also part of the Detroit River International Wildlife Refuge, reflecting the broader ecological significance of this stretch of the Lake Erie/Detroit River shoreline.

Lake Erie shoreline and coastal marsh: wetland permitting is a live issue

Monroe County's Lake Erie frontage includes extensive coastal marsh -- the Erie Marsh Preserve, Pointe Mouillee State Game Area, and the Detroit River International Wildlife Refuge are all in or adjacent to the county. That combination means EGLE's Part 303 wetlands permitting (which reaches land connected to a Great Lake, within 1,000 feet of one, or meeting certain size thresholds regardless of location) is a genuinely live consideration for shoreline and near-shoreline parcels here, on top of whatever local zoning otherwise allows. Confirm wetland status directly with EGLE's Water Resources Division before assuming a Lake Erie-adjacent parcel is unrestricted.

Septic and wells: Monroe County's own health department

Unlike several neighboring Michigan counties that share a multi-county health district, Monroe County administers its own Environmental Health Division directly, under its own Environmental Health/Sanitary Code. For new construction where sanitary sewer isn't available, an onsite sewage disposal system is required and must be installed per the county's Sanitary Code, and water-well permits require an inspection and water-sample collection by the Monroe County Health Department, Environmental Health Division (MCHD/EHD), (734) 240-7900. Permits are generally valid for one year from issuance, and a replacement septic system for an existing home requires its own permit with a site assessment.