Based on updated climate data (1995–2020), the code has increased minimum design loads:
If you are pulling a permit in Ontario after January 1, 2025, you are playing by a new set of rules. The long-awaited has officially been released, and it isn’t just a minor typo fix. This is the most significant overhaul in over a decade. ontario building code 2024
However, the province has retained "Ontario-only" amendments where local context dictates, particularly regarding snow loads, seismic activity, and specific fire safety requirements for high-rise buildings. Based on updated climate data (1995–2020), the code
4.3 Structural and Durability Provisions Based on updated climate data (1995–2020)