Oklahoma

International Building Code

IBC 2018 — mandatory statewide via OUBCC

International Existing Building Code

IEBC 2018 — mandatory statewide

International Energy Conservation Code

IFC 2018 — mandatory statewide

International Fire Code

IECC 2018 — mandatory statewide energy code

International Fuel Gas Code

IFGC 2018 — mandatory statewide

International Mechanical Code

IMC 2018 — mandatory statewide

International Plumbing Code

IPC 2018 — mandatory statewide

International Property Maintenance Code

IPMC 2018 — mandatory statewide

International Residential Code

IRC 2018 — mandatory statewide via OUBCC

National Electrical Code

NEC 2017 (NFPA 70) — mandatory statewide