Ontario Building Code Reference

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Common Starting Points

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

Supplementary Standards

SB-1 to SB-13 — technical reference standards

Amendment Tracker

All O. Reg. changes with official source links