Ohio's 2024 Building Code Just Went Live in Columbus: What Changed for Homeowners

As of April 8, 2026, the 2024 Ohio Building Code — based on the 2021 International Building Code — is officially in effect. If you're planning a renovation, addition, or new build in Columbus this year, this is the code your plans will be reviewed against, and it's different from what your neighbor built under two years ago. Here's what actually changed, what it means for your project, and the trap most homeowners fall into when a code update lands mid-renovation.