In this section, learn more about Ontario Building Code updates, Building Bulletins of the Building Services, and other notices.
Ontario has released a new Building Code to reduce regulatory burdens for the construction industry, increase the safety and quality of buildings, and make it easier to build housing.
The 2024 Building Code streamlines processes for the sector and increases harmonization with the National Construction Codes by eliminating at least 1,730 technical variations between the provincial and national requirements.
This latest edition of the Building Code was developed in consultation with our partners in the sector — including building officials, fire prevention officials, architects, engineers, builders and the construction industry — to ensure that Ontario’s buildings continue to be among the safest in North America.
Timing and Transition Provisions
The 2024 Building Code comes into effect on January 1, 2025, with a three-month grace period until March 31, 2025 for certain designs that are already underway.
Please take careful note of the following transition period dates:
January 1, 2025 to March 31, 2025
- Permit applications may be submitted using the new 2024 Building Code
- Permit applications may be submitted using the 2012 Building Code if the applicant demonstrates that their working drawings were substantially complete by December 31, 2024
April 1, 2025
Permit applications must be submitted using the 2024 Building Code