Ontario Building Code 2024 May 2026

“My contractor knows the code – I don’t need to read it.” Fact: Many contractors are unaware of the stair tread and CO alarm changes. Always verify.

“Small buildings (sheds, garages) are exempt.” Fact: Detached garages under 10 sq.m. (108 sq.ft.) are exempt, but any garage with heating or a door connected to the house triggers CO alarm requirements. ontario building code 2024

Whether you are a seasoned developer or a homeowner building a backyard suite, your first step should always be the same: “My contractor knows the code – I don’t

Construction is an act of trust. Following the OBC 2024 is how we honour that trust. Disclaimer: This article provides general information and does not constitute legal or professional engineering advice. Always consult a licensed professional and your local municipality for site-specific compliance with the Ontario Building Code 2024. (108 sq

For builders, architects, engineers, developers, and homeowners undertaking a major renovation, understanding the is not just a legal obligation—it is the cornerstone of a safe, durable, and lawful project.