OBC 2024 retains the 9-division structure but introduces significant reorganization:
The 2024 OBC significantly expands the permissions for "mass timber" construction. Following global trends and extensive fire safety testing, the code permits encapsulated mass timber construction (EMTC) for buildings up to (previously limited to 6 under specific conditions, or 18 storeys under an alternate compliance path in the 2022 amendments). ontario building code 2024
A separate document detailing Ontario-specific modifications, additions, and deletions to the national baseline. OBC 2024 retains the 9-division structure but introduces
The most immediate change for industry professionals is how the code itself is structured. 1. A Two-Volume Format The most immediate change for industry professionals is
Ontario, British Columbia, and Quebec simultaneously expanded EMTC provisions to allow taller buildings up to 18 storeys, as well as various building types including restaurants, shops, care facilities, and warehouses, to be fully constructed with encapsulated mass timber. This harmonization across provinces represents a major step toward sustainable construction practices.
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.
The represents the most significant overhaul in the province's history, featuring over 1,700 technical changes . It officially came into effect on January 1, 2025 , with the primary goal of harmonizing Ontario’s standards with the National Building Code of Canada to streamline construction across provinces. Key Highlights of the 2024 Edition