Important notice regarding edition numbering: We have moved to a single-year format on most Annual publications, aligned with the year of publication. This change is intended to standardize edition naming. Content remains fully updated for 2026.
Well-received and highly recommended by building officials and construction practitioners, this OBOA-endorsed title is the only legal source you need for the Building Code Act, 1992, plus the 2012 and 2024 Ontario Building Codes.