One of the most impactful new features in the 2024 Ontario Building Code (OBC) is the elimination of the "Primary Entrance" requirement for accessibility in small residential buildings.
Abstract
This paper summarizes the Ontario Building Code (OBC) 2024: its context, major updates from previous editions, technical and regulatory impacts, implementation challenges, and recommendations for stakeholders including municipalities, designers, builders, and code officials. It synthesizes likely priorities based on recent provincial and national trends in building regulation (energy performance, fire safety, accessibility, resilience) and provides practical guidance for compliance and transition planning. 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. One of the most impactful new features in
Secondary Suites: The definition of "house" has been replaced with terms like "secondary suite" to offer more flexibility in multi-generational or rental living spaces. Reduced Red Tape: Architects and engineers licensed in
The tragic Grenfell Tower fire in London (UK) and subsequent Canadian reviews have influenced fire safety.