Off-grid site report

Calhoun County, MI

42.3357, -85.2846 · 889 ft elevation
Read this before you act on anything below. This is my researched starting point for Calhoun 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 rulesCalhoun County, MI

Zoning & raw-land occupancy
Varies locallyCalhoun County has no countywide zoning code. The County Planning Commission only reviews and coordinates township/city zoning ordinances and master plans; actual zoning authority belongs to the roughly 20 townships and cities in the county, each of which sets its own rules for land use. source
Dwellings, tiny homes & RVs
Unclear - verifyNo county-level ordinance addresses tiny homes or RV occupancy. This is governed entirely by the applicable township or city zoning ordinance, so you need to confirm with the specific local unit, for example Marshall Township's Zoning Administrator. source
Building permits & codes
RestrictedBuilding permits are required, but which government enforces the code (state, county, or township) varies by location per Michigan LARA's Statewide Jurisdiction List. Locally, townships like Leroy Township process building, electrical, mechanical, and plumbing permits directly under the Michigan Building Code. source
Septic & composting toilets
RestrictedThe Calhoun County Public Health Department's Environmental Public Health Division is the permitting authority for septic systems, enforcing the county's own Sanitation Code with minimum tank size rules and engineering review for larger systems. Composting toilets are not separately addressed in available county materials, so that specific question is not confirmed. source
Greywater reuse
Unclear - verifyNo Calhoun County-specific greywater ordinance was found; the county's Sanitation Code focuses on sewage disposal and wells, not greywater specifically. Absent a confirmed county rule, the state plumbing code baseline from LARA applies.
Rainwater harvesting
Generally allowedNo county ordinance or health department page restricting rainwater harvesting was found, so this inherits the general state baseline of being permitted. Not confirmed as a distinct county rule.
Private wells & water rights
Generally allowedThe Calhoun County Public Health Department issues well permits and enforces state well-construction law (Act 368, P.A. 1978, Part 127) locally, requiring a well log before approval. Wells and septic systems are also inspected at property transfer. source
Living disconnected from utilities
Unclear - verifyNo standalone ordinance bans off-grid utility disconnection in Calhoun County, but the county directs applicants to secure an approved well/septic system (or confirm municipal service isn't available) before building, implying an approved water/sewage system is expected as part of permitting. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average
4.4 hrs/day
Worst month (sizes an off-grid array)
2.3 hrs/day
Yearly output per 1 kW of panels
1,285 kWh
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Weather1991-2020

Precipitation
33 in/yr
Snowfall
58 in/yr
Heating degree days
6,689 (cold)
Frost-free season
May 10 to Oct 3

How far help isstraight-line

Hospital
Bronson Battle Creek Hospital
5.4 mi
Fire station
Bedford Township Fire Department
4.8 mi
Hardware store
Springfield Do it Best Center
3.7 mi
Grocery
Family Fare
2.6 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 49037).

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.