The is a provincial regulation under the Building Code Act that sets minimum standards for the design and construction of buildings to protect public health, safety, and accessibility. Effective January 1, 2025 , the new 2024 Ontario Building Code came into force, representing the most significant overhaul in years with over 1,700 revisions. Key Components of the Ontario Building Code
Here is a useful breakdown of what you need to know about building codes in Ontario, including recent updates, permit requirements, and key focus areas. building codes ontario
: Changes affecting fire safety, such as requirements for specialized sprinkler systems in certain glazed assemblies. The is a provincial regulation under the Building
As of January 1, 2025 , the 2024 Ontario Building Code comes into force. : Changes affecting fire safety, such as requirements
| Feature | Requirement (Typical Part 9 Residential) | |--------|--------------------------------------------| | Snow load | 1.5–3.5 kPa (regional) | | Wind load | 0.5–0.9 kPa | | Frost protection depth | 1.2 m min. | | Ceiling height | 2.1 m min. | | Egress window size | 0.35 m² min., 380 mm min. dimension | | Stair rise/run | 210 mm max / 210 mm min | | R-value (walls) | R-22 effective (RSI 3.85) | | Air leakage | ≤ 2.5 ACH @50 Pa | | Smoke alarms | Hardwired, interconnected | | Plumbing vent | ≥ 3" through roof | | Accessible door width | 850 mm (public buildings) |
The OBC is a regulation under the Building Code Act . It sets the minimum standards for construction, renovation, and change of use of buildings.