How often are new editions of Ontario's Building Code released?

The correct answer is that updates to Ontario's Building Code generally follow the cycle of the National Building Code. This practice ensures that provincial regulations remain consistent with national standards, reflecting changes in building practices, technologies, and safety requirements. The National Building Code of Canada is typically updated on a five-year cycle, and Ontario aligns its revisions with these updates to maintain uniformity across jurisdictions and to adopt best practices established at the national level.

While the other options suggest more frequent or less structured timelines, they do not accurately capture the systematic approach that Ontario employs to ensure that its Building Code is relevant and integrates improvements based on comprehensive review processes coordinated with national standards. Following the cycle of the National Building Code allows for thorough research, stakeholder input, and the practical implementation of new materials and techniques that enhance safety and efficiency in building practices.