Ontario Building Code Reference
2024 & 2012 editions
For reference only. Always verify against official sources. See disclaimer.
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Part 3:Fire Protection
Occupancy classification, fire separations, suppression
Part 4:Structural Design
Loads, foundations, structural requirements
Part 9:Housing & Small Buildings
The most-referenced part for residential construction
Part 10:Change of Use
Requirements when changing building occupancy
Amendment Tracker
All O. Reg. changes with official source links