Off-Grid Living in Perkins County, South Dakota

I'll be upfront: Perkins County, South Dakota is one of those places where the paper trail runs thin. This is a sparsely populated county (under 3,000 people), and in my research I could not find a published Perkins County zoning ordinance, building permit page, or septic ordinance on the county's official site (perkins.sdcounties.org), Municode, or eCode360. Some search results about "Perkins County" zoning actually referred to a different Perkins County in Nebraska, and I've excluded those entirely. So a lot of what follows is the South Dakota state baseline, with a clear flag on what's not confirmed locally.

Zoning: South Dakota law (SDCL 11-2) lets county boards adopt zoning ordinances covering building height, lot coverage, and land use, but adoption is optional. I could not confirm whether Perkins County has actually adopted a countywide zoning ordinance. Many small, rural SD counties have none at all. You need to ask the county directly.

Dwellings, tiny homes, RVs: No county-specific rule surfaced in my research. If Perkins County has no zoning, there may be no dwelling-size or RV-occupancy restriction, but that's a call to make with the county, not an assumption to build on.

Building permits: Statewide, South Dakota leaves adoption of building codes (based on the 2021 International Building Code) to individual cities and counties. Many rural unincorporated areas of the state have no local building code enforcement at all. I found nothing confirming Perkins County has adopted one, so ask the county before assuming you're in the clear.

Septic: This one is more solid. On-site wastewater systems statewide are regulated by the South Dakota Department of Agriculture and Natural Resources (DANR) under its administrative rules, with county planning offices often playing a local administrative role. Installers must be state-certified. No Perkins County-specific septic ordinance (setbacks, lot size minimums) turned up, so confirm any local add-on rules with the county.

Greywater and rainwater: Neither has a confirmed state statute or county ordinance addressing them. This is genuinely open territory as far as my research shows, ask the county directly before setting anything up.

Wells and water rights: South Dakota follows prior appropriation doctrine for all water, including groundwater, administered by DANR's Water Rights Program, with an exception for individual domestic use. Well construction follows statewide DANR standards. Some water-related filings go through the county Register of Deeds, which in Perkins County is a confirmed, real office.

Utilities: No state law forbids living off-grid. Electrical work is licensed statewide through the South Dakota Electrical Commission. No Perkins County-specific rule barring utility disconnection was found.

Bottom line: for anything beyond septic and well/water rights, which are governed by clear state rules, you're going to need to call the county directly and ask plainly whether zoning, building codes, or greywater rules exist. Don't assume "no ordinance found online" means "no rule."