Construction Code Ontario [best] Jun 2026

This feature is for informational purposes. Always consult a registered code professional or local building department before starting a project. The Ontario Building Code is enforced by each municipality; amendments may apply.

The code still allows (following a controversial 2022 change). It does not yet mandate sprinklers in all new homes—only those over 600 m² or 3 storeys. And the Ontario Construction Code (which covers demolition, excavation, and temporary structures) remains largely harmonized with the National Building Code, with only provincial amendments on frost protection and sewer backing. construction code ontario

One of the most talked-about changes: . This applies to: This feature is for informational purposes