Ontario Building Code Tools
Determine the minimum required window area for residential rooms and generate corresponding window sizes and quantities, based on the 2024 Ontario Building Code.
Calculate minimum window requirements for residential buildings
Based on OBC Table 9.7.2.3 • Find optimal window configurations • Meet compliance requirements • Save on costs
Switch between metric (m²) and imperial (ft²) measurements with real-time conversion
See window configurations with visual mockups and cost estimates
All solutions meet OBC requirements with safety buffers
Built for architects, contractors, and homeowners
Reference: Ontario Building Code Table 9.7.2.3
Found this useful? Support our free tools.