Off-grid site report
Blue Earth County, MN
44.1954, -94.0048 · 824 ft elevationRead this before you act on anything below. This is my researched starting point for Blue Earth 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 rulesBlue Earth County, MN
Zoning & raw-land occupancy
Varies locallyBlue Earth County administers zoning under Minnesota Statutes Chapter 394 in most unincorporated townships, including setback rules for structures near residential parcels and public waters. But Mankato Township, Lime Township, and all cities in the county have their own zoning authority instead of the county's. source
Dwellings, tiny homes & RVs
Unclear - verifyNo county page specifically addresses tiny homes or RVs as permanent dwellings; this determination is likely made case-by-case by the zoning office (county or applicable city/township). Confirm directly with Property and Environmental Resources or the relevant municipality.
Building permits & codes
Varies locallyThe county's Property and Environmental Resources Department issues building permits in most unincorporated townships, but the City of Mankato issues them for Lime and Mankato Townships and for the city itself. The county says it's the property owner's responsibility to confirm which office has jurisdiction. source
Septic & composting toilets
Generally allowedSeptic systems (SSTS) are permitted under a county ordinance updated in 2021 to match state rules, requiring a licensed designer, county-approved plans, and an installation permit; some system types need an ongoing operating permit. Composting toilets aren't separately named, so state rules apply by default. source
Greywater reuse
Unclear - verifyNo county page separately addresses greywater reuse; it may only be considered as part of SSTS design review. Ask Property and Environmental Resources directly when planning a system.
Rainwater harvesting
Unclear - verifyNo county ordinance specifically regulating rainwater catchment was found; this likely inherits Minnesota's statewide plumbing code baseline for any plumbed system. Confirm with the county building office if tying a system into a permitted structure.
Private wells & water rights
Generally allowedBlue Earth County is delegated to enforce the state well code, issuing permits to construct, reconstruct, and seal wells, plus maintenance permits for unused but protected wells; well disclosure is also required at property transfer. The county no longer runs its own water-testing lab and instead partners with a private lab (MVTL). source
Living disconnected from utilities
Unclear - verifyNo county ordinance was found requiring or prohibiting full grid disconnection for a habitable dwelling; this is more likely governed, if at all, by individual city or township codes. Confirm with the applicable city or township directly.
Sun30-year normals
- Peak-sun hours, annual average
- 4.7 hrs/day
- Worst month (sizes an off-grid array)
- 3.0 hrs/day
- Yearly output per 1 kW of panels
- 1,368 kWh
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Weather1991-2020
- Precipitation
- 32 in/yr
- Snowfall
- 39 in/yr
- Heating degree days
- 7,813 (severe)
- Frost-free season
- Apr 30 to Oct 3
How far help isstraight-line
- Hospital
Mayo Clinic Health System - 2.4 mi
- Fire station
North Mankato Fire Department - 1.9 mi
- Hardware store
C&S Supply - 1.2 mi
- Grocery
Hy-Vee - 2.0 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 56002).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Blue Earth County, MN?The rules above are the jurisdiction. The land check runs the parcel itself: flood zone, soils and septic suitability, wetlands, slope, access, climate, and these verdicts, from a parcel number or coordinates.
Check a parcel →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.