Ontario Building Code 2024 ✓

New Part 9 residential construction must now undergo blower door testing, achieving ≤ 2.5 Air Changes per Hour (ACH) at 50 Pascals. This is a major step toward Passive House standards.

The definition of "house" has been replaced with terms like "secondary suite" to offer more flexibility in multi-generational or rental living spaces. ontario building code 2024