Ontario Building Code 2024 Link
2024 Ontario Building Code (OBC) officially came into effect on January 1, 2025
- Visitable Housing: Broader requirements for barrier-free paths of travel and accessible doors on the main floors of new residential buildings.
- Smoke and CO Alarms: Updated requirements for the placement and interconnection of smoke and carbon monoxide alarms, particularly in renovations of older housing stock.
- Radon Mitigation: Strengthened provisions for rough-ins and barriers against radon gas, acknowledging the growing awareness of soil gas hazards in certain regions of Ontario.
- Embodied carbon limits for concrete and steel.
- Mandatory solar readiness for all new homes.
- EV charger installation (not just rough-in) for 50% of parking spots.
- Cool roofs to combat urban heat islands.
- Municipalities: develop phased implementation plans, provide training, update permit templates, and coordinate pre-application consultations for complex projects.
- Designers/Engineers: adopt whole-building energy modelling early, specify tested assemblies, and document alternative solutions thoroughly.
- Builders/Contractors: invest in training for envelope installation and testing, prequalify suppliers for compliant materials, and integrate commissioning into schedules.
- Province: fund training and municipal capacity building, align incentives (grants/permits) to offset initial costs, and publish clear guidance and example compliance packages.
- Implementation Challenges and Risks
Full Enforcement (April 1, 2025): All new permit applications must adhere exclusively to the 2024 OBC. ontario building code 2024
Effective Date: The 2024 Code officially came into effect on January 1, 2025. 2024 Ontario Building Code (OBC) officially came into