Off-grid site report

Brown County, SD

45.6636, -98.0252 · 1,299 ft elevation
Read this before you act on anything below. This is my researched starting point for Brown County, SD, 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 rulesBrown County, SD

Zoning & raw-land occupancy
RestrictedBrown County has a countywide zoning ordinance, Title 4, administered by the Planning and Zoning Department, unlike many rural SD counties with no zoning. Land is classified into districts and raw land development may require a Conditional Use Petition. source
Dwellings, tiny homes & RVs
Unclear - verifyNo specific county provision on tiny homes or RVs as dwellings was found; dwellings are governed generally by Title 4 district use standards. Confirm with Brown County Planning & Zoning how your structure type fits their use tables. source
Building permits & codes
RestrictedBrown County requires building permits, processed by Planning & Zoning, with a dedicated Title 4 chapter on permitting and enforcement. Which building code edition the county has adopted, if any, was not confirmed. source
Septic & composting toilets
Generally allowedThe Brown County Health Department issues septic permits, conducts site evaluations, and inspects installations, requiring a locally registered installer. Note the exact statewide rule citation should be confirmed directly with the department rather than relying on the page found. source
Greywater reuse
Unclear - verifyNo Brown County ordinance or South Dakota rule specifically addressing residential greywater reuse was found; this would need to be raised directly with the Brown County Health Department's environmental health division.
Rainwater harvesting
Unclear - verifyNo Brown County-specific rainwater harvesting ordinance was found. State water rights rules require a permit for most water uses except domestic use, which may be relevant depending on how the water is used.
Private wells & water rights
Generally allowedWells are regulated at the state level by SD DANR, requiring a licensed well driller; typical domestic household wells are generally exempt from needing a separate water right permit. No additional Brown County well ordinance was found. source
Living disconnected from utilities
Varies locallyNo Brown County ordinance was found prohibiting disconnection from public utilities, but state licensing rules apply to electrical and plumbing work, with an owner exemption for one's own residence. Whether Title 4 imposes a minimum utility connection requirement was not confirmed.

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)
2.4 hrs/day
Yearly output per 1 kW of panels
1,373 kWh
JFMAMJJASOND

Weather1991-2020

Precipitation
22 in/yr
Snowfall
38 in/yr
Heating degree days
8,633 (severe)
Frost-free season
May 6 to Sep 27

How far help isstraight-line

Hospital
Marshall County Healthcare Center Avera
16.0 mi
Fire station
Groton Fire & Rescue Station 1
15.5 mi
Hardware store
S & S Lumber Co.
14.6 mi
Grocery
Ken's FoodFair
14.7 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 57432).

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.