Off-grid site report

Rosebud County, MT

46.2744, -106.4447 · 2,480 ft elevation

Read this before you act on anything below. This is my researched starting point for Rosebud County, MT, 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 rulesRosebud County, MT

Zoning & raw-land occupancy

Generally allowedRosebud County has no general zoning for private residential occupancy; limited zoning tools exist only for floodplain and airport hazard areas, per the County Planner's office. Land subdivisions still fall under the state Subdivision and Platting Act as implemented locally. source

Dwellings, tiny homes & RVs

Unclear - verifyNo Rosebud County ordinance on tiny homes or RV occupancy was found; this isn't confirmed locally, so ask the County Planner's office directly.

Building permits & codes

Generally allowedRosebud County states building and electrical permits are not required at the county level, though the State of Montana may require them in some cases. source

Septic & composting toilets

RestrictedRosebud County does require septic permits, issued through the county Sanitarian's office under state DEQ wastewater standards. Composting toilets aren't separately addressed and would likely go through the same review. source

Greywater reuse

Unclear - verifyNo county-specific greywater rule was found; it would likely fall under the same Sanitarian/septic review process, applying state DEQ rules, but this is not confirmed. Ask the Sanitarian's office.

Rainwater harvesting

Unclear - verifyNo Rosebud County ordinance on rainwater harvesting was found; not confirmed locally, likely defaults to general state allowance for basic non-potable collection.

Private wells & water rights

Generally allowedWells are a state matter handled by Montana DNRC's exempt-well framework; Rosebud County has no separate well permit listed.

Living disconnected from utilities

Unclear - verifyNo county ordinance was found requiring grid, water, or sewer hookup for a standalone residence; the county's subdivision and septic review processes function as the practical gatekeepers for new land divisions, per the County Planner's office. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 4.7 hrs/day
Worst month (sizes an off-grid array): 2.6 hrs/day
Yearly output per 1 kW of panels: 1,364 kWh

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Weather1991-2020

Precipitation: 12 in/yr
Snowfall: 30 in/yr
Heating degree days: 7,639 (severe)
Frost-free season: May 8 to Sep 29

How far help isstraight-line

Hospital Rosebud Health Care Center: 10.8 mi
Fire station Rosebud County Fire Department: 10.4 mi
Hardware store Clark Hardware: 11.0 mi
Grocery Picchioni's IGA: 11.1 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 59333).

Size a solar system Heat loss & insulation Firewood per winter Rainwater harvest Garden size Panel tilt

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 21, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.