Off-grid site report
Mason County, MI
43.9560, -86.4006 · 650 ft elevationRead this before you act on anything below. This is my researched starting point for Mason 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 rulesMason County, MI
Zoning & raw-land occupancy
Varies locallyMason County's Planning and Zoning Department directly administers zoning for eleven townships, but Ludington, Pere Marquette, Hamlin, Free Soil, Grant, and Mason Townships have their own separate ordinances. Uses not specifically listed as permitted are treated as prohibited. source
Dwellings, tiny homes & RVs
RestrictedNo county-specific tiny home exemption was found; the county defers to the 2015 Michigan Residential Code. At least one township (Sheridan) limits camping on a parcel to four days per year without a permit, restricting long-term RV living.
Building permits & codes
RestrictedThe Mason County Building Department issues building, electrical, mechanical, and plumbing permits for unincorporated townships; Ludington and Pere Marquette Township handle their own. A hand-drawn floor plan is required for dwellings and most accessory structures. source
Septic & composting toilets
Generally allowedDistrict Health Department #10 (DHD#10) issues septic permits, evaluates sites, and inspects installations. Homeowners are allowed to install their own septic systems, though a final inspection is required before backfilling. source
Greywater reuse
Generally allowedNo Mason County-specific greywater ordinance was found; the county appears to follow the statewide Michigan Plumbing Code/Residential Code framework with no added local restriction identified. Not confirmed beyond the state baseline.
Rainwater harvesting
Generally allowedNo county-specific rainwater harvesting ordinance was found. Not confirmed beyond the statewide baseline framework.
Private wells & water rights
Generally allowedDistrict Health Department #10 issues well permits and inspects installations for Mason County, and also offers private well water testing support.
Living disconnected from utilities
Unclear - verifyNo explicit Mason County ordinance banning full utility disconnection was found, but building permit and occupancy processes, plus township zoning definitions, reference needing an approved private water supply and septic system as a condition of use. source
Sun30-year normals
- Peak-sun hours, annual average
- 4.2 hrs/day
- Worst month (sizes an off-grid array)
- 1.8 hrs/day
- Yearly output per 1 kW of panels
- 1,232 kWh
JFMAMJJASOND
Weather1991-2020
- Precipitation
- 36 in/yr
- Heating degree days
- 7,047 (cold)
- Frost-free season
- May 11 to Oct 8
How far help isstraight-line
- Hospital
Spectrum Health Ludington Hospital - 1.5 mi
- Fire station
Ludington Fire Department - 1.6 mi
- Hardware store
Lowe's - 0.5 mi
- Grocery
ALDI - 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 49431).
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.