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2024 OBC: Timing & Transition Provisions

The 2024 Building Code comes into effect on January 1, 2025, with a three-month transition period that extends until March 31, 2025, for applications for which the working drawings were substantially complete before January 1, 2025. The province has also planned a training program to support the sector and keep current projects on track. 

Please take careful note of the following dates in the transition timeline:

  • April 10, 2024 - Release and filing of the 2024 Ontario Building Code
  • January 1, 2025 - 2024 Ontario Building Code in effect
  • March 31, 2025 - Deadline for permit applications using the 2012 Ontario Building Code, where working drawings were substantially complete before January 1, 2025
  • April 1, 2025 - All permit applications must use the 2024 Ontario Building Code


Key Transition Period Dates (December 31, 2024 - March 31, 2025):

April 10, 2024 - December 31, 2024

January 1, 2025

March 31, 2025

April 1, 2025

9 Months

3 Months

Permit applications must be submitted using the 2012 Building Code until December 31, 2024

Permit applicants may use the new 2024 Building Code

Last day to submit permit applications using the 2012 Building Code where working drawings were substantially complete before January 1, 2025

All permit applications must be submitted using the 2024 Building Code

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