Regulatory framework
The code baseline for Pennington County.
Ordinance 735 adopts the most current International Building Code, including Appendices C and I, and the most current International Residential Code, with county-approved amendments; in 2026 the current ICC editions are the 2024 IBC and 2024 IRC. State-adopted electrical, fuel-gas, plumbing, mechanical, and fire codes are administered by South Dakota, with additional county fire provisions in PCZO Sections 325-327.
Inspection lane
The permit holder or agent must notify the Building Inspector when work is ready; the inspector may require at least 48 hours' notice. County inspections include an initial siting visit after permit approval and an as-built inspection after state electrical, plumbing, and mechanical approvals and final grading. Approved site and floor plans must be on site and the work must remain accessible. Call 605-394-2186 to arrange county inspections; the residential form lists state Plumbing at 605-773-3429 and Electrical at 605-773-3573.