Ohio

Updated 3/15/2025

Overview

Ohio enforces statewide building codes, ensuring uniform standards across all jurisdictions. The Ohio Board of Building Standards (BBS) oversees the adoption, amendment, and enforcement of these codes. While local jurisdictions must comply with state codes, they may have additional requirements or amendments, so it is advisable to consult with local building departments for region-specific regulations.

Ohio has state-specific amendments to the Residential Code of Ohio (RCO), Ohio Plumbing Code (OPC), and the National Electrical Code (NEC).

CodePro Uses the Following Codes for Answers:

Additional Resources:

For more details, click here for the state-specific website.

For the 2019 Residential Code of Ohio (RCO) and its amendments, visit this page.

Ohio has also adopted the 2024 Ohio Building Code (OBC) (based on the 2021 IBC) and the 2024 Ohio Mechanical Code (OMC) (based on the 2021 IMC), both with Ohio-specific amendments.
  • Adoption Category

Statewide

  • Amendments

State and Local

Statewide Adoption

A statewide adoption means that building codes are enforced uniformly across the entire state. The state government adopts and mandates compliance with specific building, residential, plumbing, and electrical codes. Local jurisdictions must follow these codes without making significant amendments, ensuring consistency in construction regulations across the state.

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