Ontario | Building Code 2024

A major structural change is the way the code is presented. The 2024 OBC now references the for harmonized parts, relying on a specific "Ontario Amendments" document to outline the unique differences for the province.

The 2024 code integrates more stringent Accessibility for Ontarians with Disabilities Act (AODA) requirements into the core building code. Key changes include:

The code integrates with to provide comprehensive accessibility regulation. ontario building code 2024

: Since April 1, 2025 , all building permit applications are reviewed strictly under the 2024 OBC.

: All permit applications were required to follow the 2012 OBC. January 1 to March 31, 2025 (Grace Period) A major structural change is the way the code is presented

| Aspect | Ontario 2024 | NBC 2020 | |--------|--------------|----------| | Wood-frame height | 6 storeys | 12 storeys (mass timber) | | Energy efficiency | SB-12 tiered | NECB 2017 | | Radon protection | Mandatory in all new homes | Mandatory in high-risk zones only | | Barrier-free thresholds | 13 mm max | 10 mm max |

The 2024 Ontario Building Code (OBC), released on April 10, 2024, represents one of the most significant overhauls in the province's construction history. This latest edition primarily focuses on , eliminating approximately 1,730 technical variations to reduce regulatory burdens and "red tape". Timeline and Transition Periods Key changes include: The code integrates with to

: Contains the main administrative and technical regulations. 2024 Ontario Building Code Compendium (Vol 2)