Regulatory framework
The code baseline for Lyman County.
N/A. Lyman County Commission proceedings verify that the county reviews and approves building permits, but no currently adopted county structural IBC or IRC edition was found in the county's public materials. For covered new nonresidential construction after July 1, 2026 where no local code is adopted, South Dakota law designates the 2024 International Building Code as the state minimum, subject to statutory exclusions; state electrical and plumbing rules remain separate.