The OBC is enforced by local municipalities, which are responsible for issuing building permits and conducting inspections. Builders must obtain a building permit before commencing construction, and inspections are conducted at various stages of construction to ensure compliance with the code.
A grace period exists until March 31, 2025 . Projects with substantially completed plans under the 2012 Code before January 1, 2025, may still use the old standards if submitted by this deadline. ontario building codes