Building permits, zoning and land rules in Clark County, South Dakota

Yes. Clark County requires a permit before a building is erected, enlarged, or structurally altered¹. Clark County maintains its own zoning ordinance and map, while incorporated municipalities may apply separate rules¹. Ask Planning & Zoning which application and current district standards apply before ordering plans or beginning site work¹. South Dakota does not allow local governments to require a building permit for substantially similar repair or replacement of specified exterior parts of a detached, owner-occupied single-family home, but other codes and ordinances still apply⁷. The statewide residential energy-efficiency standard is the voluntary 2009 International Energy Conservation Code; we could not confirm that Clark County has adopted a separate building code⁷. Ask Planning & Zoning about fees, inspections, and occupancy approval¹.

Start with Clark County Planning & Zoning on the second floor of the courthouse at 605-532-3751¹. The county page links the zoning ordinance, official map, and amendment materials¹. For questions about access from a county road, contact the Clark County Highway Superintendent at the courthouse, PO Box 294, Clark, SD, at 605-532-3667⁸. South Dakota DANR administers the statewide on-site wastewater standards; its listed program contact is at 523 E Capitol Ave, Pierre, SD 57501-3182, at (605) 773-4647^3,9. These are separate approvals: a county building permit or zoning approval does not replace state electrical, plumbing, septic, water-right, or state-highway requirements^10,11,12,13.

Yes. Clark County maintains a county zoning ordinance and official zoning map, while municipalities may apply their own rules inside incorporated boundaries¹. The official map identifies Commercial/Industrial, Town, two aquifer-protection zones, and municipalities, and it replaces the map adopted with the original county ordinance². The map is only a starting point because district regulations remain subject to the ordinance and later amendments². We could not confirm the current minimum lot size, setbacks, lot coverage, building height, or minimum dwelling size. Give Planning & Zoning the parcel number and proposed use, then ask for the current ordinance section and every amendment that applies¹.

South Dakota sets the minimum requirements for on-site wastewater systems in Clark County, and local governments may impose stricter requirements³. A conventional individual on-site system may be designed and installed under the state rules without submitting project plans to DANR, while other systems receiving human waste require state review and approval before construction⁵. A certified installer is required, and a public sewer can rule out a private system when the state availability conditions are met⁵. Ask Planning & Zoning whether the parcel has an additional local land-use or aquifer-overlay condition¹. Only 6.3% of Clark County soils are rated without severe limitations for a conventional drain field, so test the site early¹⁴. We could not confirm a general county inspection process; ask DANR what review applies before hiring or excavating⁹.

We could not confirm whether Clark County allows full-time RV occupancy, temporary camping during construction, or a tiny home as a permanent dwelling. Do not treat that gap as permission. Ask Clark County Planning & Zoning about the exact parcel, mapped district, proposed duration, utility connections, and whether the unit will be on wheels or a permanent foundation^1,2. Manufactured-home occupancy, accessory dwellings, and minimum dwelling size also remain unconfirmed. South Dakota's sanitation rule answers only waste disposal where water or electricity is unavailable: listed alternatives are limited, and every listed option except a vault privy requires advance approval as an experimental system⁵. That sanitation rule does not authorize residential occupancy. Get the county's written land-use answer before buying an RV or tiny home for the site, and separately confirm sanitation requirements with DANR^1,9.

1. Ask Clark County Planning & Zoning to confirm the parcel's mapped district, permitted use, current setbacks, and application requirements^1,2.

1. Apply for the required county building permit before construction¹.

1. Test septic feasibility early and ask DANR whether state plan review is required; only 6.3% of county soils are rated without severe conventional-drain-field limitations^5,14.

1. Determine whether the proposed well use needs a water-right permit; when one is required, approval must precede drilling¹².

1. Secure state electrical and plumbing paperwork and inspections. Qualifying owners may perform wiring under the owner exemption, but must obtain the homeowner permit and pass final inspection before occupancy^6,11.

1. Contact the Highway Superintendent about county-road access, or obtain South Dakota DOT permission before building an approach to a state highway^8,13.

Check the county zoning map and obtain the current district standards before treating acreage as buildable^1,2. Investigate septic feasibility early because only 6.3% of county soils are rated without severe limitations for a conventional drain field¹⁴. Clark County is mostly gentle ground, with 98.7% of land at a slope of 15% or less, but just 1.7% is wooded, so a parcel may offer little natural wind cover¹⁴. Annual precipitation is about 24.1 inches, and severe drought occurs in about 2.7% of years¹⁴. Verify legal road access and ask the Highway Superintendent about a county-road approach; a connection to a state highway needs South Dakota DOT permission before construction^8,13. If a well is planned, determine whether the proposed use needs a water-right permit before drilling¹². The effective property-tax rate is about 1%, and the median annual bill is about $1,392¹⁴.