Off-grid site report

Eaton County, MI

42.5817, -84.8039 · 922 ft elevation
Read this before you act on anything below. This is my researched starting point for Eaton County, MI, not legal advice and not a guarantee. Rules change, and the deciding facts on any specific parcel (setbacks, perc results, overlay districts, deed restrictions, road frontage) live at the county or town office, not in any database. Before you buy land or build, confirm the current rules directly with the local zoning and health offices - the sources on this page tell you exactly who to call.

The local rulesEaton County, MI

Zoning & raw-land occupancy
Varies locallyAs of July 1, 2026, Eaton County no longer administers planning and zoning; each township, city, or village now sets its own rules on land use and occupancy. You must contact your specific local township or city office. source
Dwellings, tiny homes & RVs
Varies locallyTiny home, RV, and dwelling-minimum rules are set locally by each township or city now that the county has exited zoning administration; there's no single county standard. Ask the applicable township office directly. source
Building permits & codes
RestrictedThe Eaton County Department of Construction Codes inspects work for code compliance under the state building code, though inspectors won't help with project planning or dictate materials. State law also requires contractors to be licensed, per LARA. source
Septic & composting toilets
RestrictedThe Barry-Eaton District Health Department requires a permit before constructing, altering, or replacing any septic system, and building permits/construction cannot proceed without sewage approval when public sewer isn't available. Composting toilets are not separately addressed; confirm with BEDHD. source
Greywater reuse
Varies locallyNo standalone Eaton County or BEDHD greywater ordinance was found; BEDHD paperwork implies greywater sources like softener discharge must bypass the septic system, consistent with the state plumbing code baseline. Not fully confirmed beyond that. source
Rainwater harvesting
Unclear - verifyNo Eaton County or BEDHD-specific rule on rainwater harvesting was found in this research; the state plumbing code baseline likely applies. Not confirmed at the county level.
Private wells & water rights
RestrictedBEDHD requires a construction permit and site evaluation before drilling a new well, plus a final review after installation and periodic sanitary survey inspections for Type II wells. Large-capacity wells (70 gpm or more) also require state review via EGLE's Water Withdrawal Assessment Tool. source
Living disconnected from utilities
RestrictedBEDHD rules bar occupancy of a newly constructed home or use of its water/wastewater system until the health department approves the septic and well, which in practice blocks fully off-grid occupancy of new construction. Eaton County's former mandatory time-of-sale inspection program was rescinded around 2018, leaving complaint-driven enforcement in its place. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average
4.3 hrs/day
Worst month (sizes an off-grid array)
2.2 hrs/day
Yearly output per 1 kW of panels
1,259 kWh
JFMAMJJASOND

Weather1991-2020

Precipitation
34 in/yr
Snowfall
40 in/yr
Heating degree days
7,056 (cold)
Frost-free season
May 3 to Oct 9

How far help isstraight-line

Hospital
University of Michigan Health - Sparrow Eaton
1.8 mi
Fire station
Charlotte fire station
2.0 mi
Hardware store
True Value
11.4 mi
Grocery
Walmart Supercenter
0.1 mi

From OpenStreetMap. Road miles will be longer, often much longer in hill country.

Plan this spot

These open with this location's real numbers already filled in (ZIP 48813).

Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt

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Sources: US Census Bureau geocoder; NLR PVWatts v8 (solar); NOAA NCEI 1991-2020 climate normals (nearest station) or Open-Meteo (ZIP-centroid) for weather; Open-Elevation; OpenStreetMap contributors. Public data retrieved Aug 22, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.