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Pennington County Planning Commission approves several conditional-use permits, adds septic inspection condition

Pennington County Planning Commission · March 20, 2026
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Summary

At its March 9 meeting the Pennington County Planning Commission approved multiple conditional use permits — including an efficiency dwelling (COCU26-0002) approved with a new condition requiring septic-system inspection within 30 days — and approved an accessory dwelling unit while continuing a South Dakota DOT parking-lot request to March 23.

The Pennington County Planning Commission on March 9 approved a slate of conditional use permits, adding a specific septic-inspection requirement to one application after commissioners identified an above-ground sewer connection in staff photos.

Jason Thennison, assistant planning director, presented COCU26-0002 for applicant Todd Lankenow, describing a proposed efficiency dwelling on a 3.02-acre parcel zoned agricultural and saying staff had found no neighborhood impacts and recommended approval with conditions. Commissioners questioned site photos that showed a visible above-ground connection to the septic system; Thennison said the property holds a septic permit and that the observed connection was the interface to the drain field.

Chair moved to add a condition that “within 30 days of approval the system be inspected and approved,” and the commission adopted that condition before voting to approve COCU26-0002 per staff recommendation. The chair made the motion to approve and the commission carried the motion by voice vote.

The commission next approved COCU26-0003, a caregiver residence proposal for Owen and Joyce Floyd, with staff noting the applicants had not posted the required public-notice sign in the prescribed location; staff recommended approval with conditions and commissioners discussed septic and building-permit timing for the modular structure the applicants plan to place on the property. The commission voted to approve COCU26-0003 with 10 conditions.

A conditional use permit for a temporary parking lot proposed by the South Dakota Department of Transportation (COCU26-0004) was continued to the March 23 Planning Commission meeting so staff and the agent could resolve outstanding details.

Senior Planner Cody Sachs presented COCU26-0005, an accessory dwelling unit at 13834 Sudbury Ranch Road for landowner Chad Timmer. Sachs said the ADU meets ordinance criteria and noted one written public comment expressing concern about rental use; Sachs explained the zoning ordinance allows ADUs to be rented and that short-term rental would require a VHR license. The applicant’s agent said the current intent is personal use. The commission approved COCU26-0005 with 14 conditions.

The actions taken were procedural approvals of conditional use permits and a continuance; the commission did not approve or deny any rezones or ordinances at the meeting.

What happens next: the Planning Commission’s recommendations will be forwarded to the Pennington County Board of Commissioners; several items (including the SD DOT parking-lot request) will return to the commission on March 23 for further review.