Building permits, zoning and rural land rules in South Dakota

Eight South Dakota counties do not require a residential building permit in unincorporated areas: Tripp County, Corson County, Jones County, Oglala Lakota County, Ziebach County, Campbell County, Buffalo County and Haakon County¹. Another 11 counties require a permit only in some cases, and 47 require one². The no-building-codes county list compares them.

The "limited" label covers different things. Custer County's entry reflects building permits for larger structures, while Todd County, Dewey County, Harding County, Yankton County, Aurora County and Potter County are listed as limited because of the statewide electrical wiring permit². Read the individual county page before assuming a limited county has no permit at all.

South Dakota's default 2024 International Building Code standard applies to buildings begun after July 1, 2026 in places with no local building ordinance, but it excludes residential structures, mobile or manufactured homes, and farmsteads with their accessory buildings⁴. That exclusion does not waive local zoning or other local requirements⁴.

The statute's authority to adopt the 2024 International Residential Code is written for municipalities and does not name counties⁴. So a county's residential building permit answer rests on that county's own ordinance, and cities inside a county may apply a residential code the county does not⁴. One rule applies everywhere: a county, municipality or township may not require a building permit for repair or substantially similar replacement of listed exterior parts of a detached owner-occupied single-family home⁴.

South Dakota has 12 counties without county-wide zoning, led by Custer County, Corson County, Fall River County, Charles Mix County, Jones County, Butte County, Oglala Lakota County and Ziebach County³. Another 50 counties have county zoning². We could not confirm the zoning answer for Lyman County, Todd County, Jackson County or Potter County; ask the county auditor, who files county ordinances^2,4.

Seven counties have neither a residential building permit nor county-wide zoning, starting with Corson County, Jones County and Oglala Lakota County⁶. Compare the no-zoning list and the no-codes, no-zoning list. County boards may regulate building size, yards and lot coverage by zoning ordinance, so a county with a zoning ordinance can restrict a parcel even without a building permit⁸.

The South Dakota Department of Agriculture and Natural Resources (DANR) administers minimum requirements for individual and small on-site wastewater systems, and local governments may impose stricter ones⁹. In 52 of the 66 counties we checked, DANR is the septic authority; 8 more are listed as served by a multi-county health district, and in 6 a county office issues septic permits². The county offices named are Pennington County's Planning Department, Lawrence County's Planning and Zoning Department and Minnehaha County's Planning Department².

DANR asks owners to contact it before installing a new on-site system, except a conventional system serving an individual residence⁹. Where water or electricity is unavailable, the rules call for vault privies, chemical toilets, incinerator toilets or composting units, and every unconventional system except a vault privy needs plans approved before installation¹⁰. Confirm with the county planning office before you apply, because the answer varies by county.

Yes, even where no county building permit exists. An owner who wires their own residence or farmstead needs an approved homeowner permit before starting; the owner exemption waives licensure, not permitting or inspection⁵. A state wiring permit costs $20 and is valid for three years, and one is required for service entrances over 60 amperes and when the estimated inspection fee is $30 or more⁷.

Inspectors need at least 72 hours' notice, a rough-in inspection must come before wiring is covered, and a final inspection is required before occupancy⁵. The installer must send the white permit copy to the commission within 15 calendar days after starting⁷. Homeowner permits do not cover rental or commercial property⁵. Questions go to the state Electrical Commission¹¹.

Plumbing installations outside cities with their own inspection programs need a plumbing inspection; the single-family inspection fee is $110¹².

Custer County leads the Bolthole Index at 70 out of 100, with building permits limited to some cases, no county-wide zoning and septic handled through the Custer County Planning and Economic Department². Pennington County scores 67 and Lawrence County 62; both require residential building permits, have county zoning and use county septic offices². Tripp County scores 58 with no residential building permit, county zoning and state septic authority².

The median county farmland value is $3,173 per acre, and Oglala Lakota County has the lowest at $871 per acre². Those are farmland values, not a quote for a homesite. The median effective property tax rate is 1.1%, and the median county bill is $1,598 a year².

South Dakota exempts domestic water use up to 25,920 gallons per day (25 gpm or less) and gives it preference over permitted uses¹³. Ask the DANR Water Rights Program whether your use needs a water-right permit before you drill; when one is required, approval must come before drilling unless the chief engineer permits a test well¹⁴.

The Tulare aquifer regimes covering Beadle County, Hand County and Spink County are fully appropriated and rated over-appropriated or declining¹³. A new driveway onto a state highway needs South Dakota DOT permission, and construction cannot start until the access permit is issued¹⁵. Splitting land into parcels describable only by metes and bounds generally requires a recorded plat before a transfer can be recorded¹⁶.