Off-Grid Living in Douglas County, South Dakota

If you're weighing a move off-grid in Douglas County, South Dakota, here's what I found digging through the county's own documents and the state's water rules. Fair warning up front: this county is a little different from a lot of rural SD counties because it actually has adopted zoning, so you can't assume "no rules apply out here."

Zoning. Douglas County has a countywide Zoning Ordinance (adopted 2018, updated in 2024), run by the Planning & Zoning Administrator. That means what you can do with raw land, an acreage, or a parcel out in the country depends on which zoning district it falls in. This isn't a "no zoning" county, so don't assume anything goes. Call the county Planning & Zoning office before you buy or build.

Dwellings, tiny homes, RVs. The zoning ordinance defines dwellings and has some structural rules (for instance, it restricts basement dwelling units unless there's enough of the structure above grade). I could not confirm from the text whether tiny homes or RVs are allowed as permanent residences in any given district, so treat that as an open question for the Planning & Zoning office, not something to assume either way.

Building permits. The county requires a building permit, administered by Planning & Zoning. I couldn't confirm which building code edition (if any) Douglas County has formally adopted, so ask the office directly which code applies to your project.

Septic and composting toilets. I couldn't find a Douglas County-specific septic ordinance. Onsite wastewater systems are regulated statewide under South Dakota's administrative rules, and counties typically administer permits locally, sometimes through the auditor's office or a community health nurse, but I don't have confirmation of exactly who handles it here. Call the county to find out.

Greywater. No county or state rule specifically addressing residential greywater reuse turned up in my research. This is genuinely unclear, ask the county directly.

Rainwater harvesting. No county ordinance found. The state's default rule is that domestic water use doesn't require a water rights permit unless you exceed a fairly high daily or peak-rate threshold, which mostly matters if you're doing large-scale catchment.

Wells. Wells fall under the state Water Rights Program, run by DANR, not a county-specific system as far as I can tell. Domestic use is exempt from needing a permit up to state thresholds. After drilling, a water sample has to go to an approved lab, usually handled by your well driller.

Utilities. Nothing in the county's documents suggests you're required to hook up to grid power or water. Electrical work is governed by the state Electrical Commission, and homeowners get an exemption for wiring their own residence. Still, confirm with Planning & Zoning that your particular district doesn't add its own wrinkle.

Bottom line: Douglas County is more hands-on with zoning than some SD counties, but a lot of the everyday off-grid questions (septic, greywater) just aren't clearly answered in what's publicly posted. That's not the same as "anything goes," it just means you need to call and ask.