Off-Grid Living in Kingsbury County, South Dakota

I dig into county-level rules for a living, and Kingsbury County, South Dakota is a good example of a place where the county has taken a real step (adopting zoning) but hasn't published much detail online, so a lot of what you need comes from calling the county directly or falling back on South Dakota state rules.

Zoning. Kingsbury County is not one of the "no zoning" rural counties you sometimes find in South Dakota. The county has adopted a zoning ordinance under the state's enabling law, SDCL 11-2, which lets a county board regulate building size, lot coverage, density, and land use for health and safety purposes. The Kingsbury County Zoning Officer reviews building applications for compliance. The county's website links to a downloadable ordinance PDF, but I wasn't able to confirm the district-by-district details (setbacks, what's allowed on raw land) in this pass, so treat those specifics as unconfirmed until you or I review that document directly.

Tiny homes, RVs, and dwellings. No official Kingsbury County text on tiny homes or RVs-as-residences turned up. This would run through the Zoning Officer's review, but I can't tell you how it'll be classified. Ask the county directly.

Building permits. Kingsbury County does require a building permit, and there's a standard application form distributed through the South Dakota Association of County Officials. I found no evidence the county has adopted a specific building code edition. South Dakota itself has no mandatory statewide building code, though any county that adopts one must comply with the 2021 IBC.

Septic and composting toilets. No Kingsbury County septic ordinance or health department page surfaced in my research. Septic systems statewide fall under South Dakota's Administrative Rules (ARSD 74:53:01), with installer certification and plumbing permits running through the State Plumbing Commission at the Department of Labor and Regulation. Composting toilets aren't addressed anywhere I found, county or state.

Greywater and rainwater. Both are genuinely unclear. I found no Kingsbury County or South Dakota rule specifically on greywater reuse or rainwater harvesting. On the water-rights side, South Dakota exempts domestic water use from a water-right permit unless you exceed fairly high daily or per-minute thresholds, but that's about water appropriation generally, not catchment rules.

Wells. Wells follow the statewide DANR Water Rights process. Depending on use, you may need a permit before drilling, and a licensed well driller is required in all cases. I found no Kingsbury-specific well ordinance layered on top.

Off-grid utilities. I found no ban on disconnecting from utilities at either the county or state level. You'll still need to pass zoning and building review, and any electrical work runs through the state's Electrical Commission (which does allow an owner's exemption for wiring your own residence).

Bottom line: Kingsbury County has more zoning infrastructure than a lot of rural SD counties, but its public documentation is thin. Call the Zoning Officer before you buy land or build.