Off-grid site report
Ottawa County, MI
42.9184, -85.8492 · 633 ft elevationRead this before you act on anything below. This is my researched starting point for Ottawa 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 rulesOttawa County, MI
Zoning & raw-land occupancy
Varies locallyOttawa County has no countywide zoning ordinance; each of its townships and cities adopts its own zoning under the state Zoning Enabling Act, so rules depend entirely on which municipality your parcel is in. source
Dwellings, tiny homes & RVs
Varies locallySome townships, like Wright Township, allow temporary dwelling permits (including RVs) if water and toilet facilities meet state and county health code, but this is set township-by-township, not countywide. source
Building permits & codes
RestrictedBuilding permits and Michigan Building Code enforcement are handled by each township or city building department, with additional driveway permits from the county Road Commission and soil erosion permits near water possibly required. source
Septic & composting toilets
RestrictedSeptic systems require a countywide permit through the Ottawa County Department of Public Health's Environmental Health Division, including site evaluation and a time-of-sale inspection ordinance; composting toilets aren't separately addressed and likely need health department approval as an alternative system. source
Greywater reuse
Unclear - verifyNo Ottawa County greywater ordinance was found; the state plumbing code baseline likely applies, but this isn't confirmed, so ask your township building department or the county health department.
Rainwater harvesting
Unclear - verifyNo Ottawa County ordinance on rainwater harvesting was found in planning, building, or health department materials, so the state baseline presumably applies but isn't confirmed.
Private wells & water rights
Generally allowedPrivate wells are permitted countywide through the Ottawa County Department of Public Health, which holds delegated authority under the state Well Construction Code and runs a Vacant Land Evaluation program plus well water testing.
Living disconnected from utilities
Unclear - verifyNo explicit county ban on disconnecting from utilities was found, but township dwelling-permit rules and countywide well/septic permitting requirements likely function as a de facto requirement for approved water and wastewater systems; this isn't a confirmed written rule.
Sun30-year normals
- Peak-sun hours, annual average
- 4.3 hrs/day
- Worst month (sizes an off-grid array)
- 1.7 hrs/day
- Yearly output per 1 kW of panels
- 1,236 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 38 in/yr
- Snowfall
- 75 in/yr
- Heating degree days
- 6,485 (cold)
- Frost-free season
- Apr 28 to Oct 16
How far help isstraight-line
- Hospital
University of Michigan Health - West - 7.9 mi
- Fire station
Georgetown Fire Department - Station 3 - 1.5 mi
- Hardware store
Lowe's - 4.7 mi
- Grocery
Family Fare - 1.1 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 49428).
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.