Regulatory framework
The code baseline for Marion County.
Marion County permit materials require compliance with the current South Carolina mandatory building-code cycle. For 2026 this is the 2021 International Building, Residential, Mechanical, Plumbing, Fire and Fuel Gas codes with South Carolina amendments, together with the 2020 National Electrical Code and other applicable state-modified standards. Flood-zone work may require an elevation certificate before permit issuance.