Off-grid site report

Mille Lacs County, MN

46.1347, -93.7392 · 1,388 ft elevation
Read this before you act on anything below. This is my researched starting point for Mille Lacs County, MN, 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 rulesMille Lacs County, MN

Zoning & raw-land occupancy
Varies locallyMille Lacs County's Development Ordinance governs land use and building placement in unincorporated areas, administered by the county Zoning Office, but some townships (like Hayland) add their own stricter rules such as density limits. A certificate of use is required before you build, and always check with your specific township as well as the county. source
Dwellings, tiny homes & RVs
RestrictedThe county officially defines a 'habitable residential dwelling' as 750 square feet or larger, meeting building code and served by water and wastewater disposal. RVs used as dwellings can trigger septic and permitting requirements under the SSTS ordinance, so don't assume you can just park one long-term; confirm with the Zoning Office. source
Building permits & codes
RestrictedBuilding in the county requires a certificate of use plus building and septic permits, all applied for online through the county's permitting portal since June 2022. Some townships require you to contact them separately for additional permitting, so check locally too. source
Septic & composting toilets
RestrictedSeptic systems (SSTS) are required under state rules (Minnesota Admin Rules 7080-7083) and the county's own SSTS ordinance, with design and installation limited to MPCA-licensed professionals. A 2015 policy change gave landowners more choice, including holding tanks, but Greenbush Township runs its own separate SSTS program so residents there need to contact the township directly instead of the county. source
Greywater reuse
Unclear - verifyI couldn't find a standalone county ordinance addressing greywater reuse specifically; it likely falls under the general SSTS wastewater rules. Best move is to call county Environmental Resources directly and ask how they'd want a greywater system handled on your property.
Rainwater harvesting
Unclear - verifyNo county-specific rule on rainwater harvesting turned up in my research, whether for simple barrels or plumbed catchment systems. Absent a local ordinance, the state plumbing code baseline would likely apply to indoor systems, but confirm with the county Zoning/Building Office before you build anything permanent.
Private wells & water rights
Generally allowedWells are regulated by the Minnesota Department of Health, not the county, with Mille Lacs County served by MDH's St. Cloud district office. The county doesn't issue well permits itself but does sell water test kits through Community and Veterans Services, and state law requires unused wells to be sealed. source
Living disconnected from utilities
Unclear - verifyI found no explicit county ordinance mandating grid electric or municipal utility hookup, but the county's definition of a legal 'habitable residential dwelling' requires it be served by water and wastewater disposal (well plus SSTS counts). If you're planning a fully off-grid cabin, it's worth confirming directly with the Zoning Office whether it can still qualify as a permitted dwelling. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average
4.6 hrs/day
Worst month (sizes an off-grid array)
2.6 hrs/day
Yearly output per 1 kW of panels
1,370 kWh
JFMAMJJASOND

Weather1991-2020

Precipitation
26 in/yr
Snowfall
38 in/yr
Heating degree days
9,324 (severe)
Frost-free season
May 18 to Sep 25

How far help isstraight-line

Hospital
Mille Lacs Health System Hospital
5.7 mi
Fire station
Onamia Fire & Rescue
5.6 mi
Hardware store
Agnew Hardware Hank
5.8 mi
Grocery
Morning Star Market
10.5 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 56359).

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

Share or save this report:New report

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.