Housing supply and code flexibility
The notorious "plumbing vent through the roof" rule remains, but new allowances for Air Admittance Valves (AAVs) (Studor valves) have been expanded for island sinks and remote fixtures, provided they meet the new standard CAN/CSA-B79. ontario building code 2024
Wireless interconnection is now explicitly permitted for smoke alarms in houses with secondary suites. Housing supply and code flexibility The notorious "plumbing
A transition period is available until March 31, 2025 , for projects where designs were substantially completed before January 1, 2025, and a permit application is submitted by this deadline. ontario building code 2024
: All new building permit applications submitted after March 31, 2025, must comply strictly with the 2024 OBC. Major Changes and Highlights