Do I need egress windows in my basement?

Yes, you absolutely need egress windows in any basement bedroom in Ottawa. This is a critical safety requirement under the Ontario Building Code and is non-negotiable for legal occupancy.

Understanding Egress Requirements

The Ontario Building Code requires that every bedroom must have a window or door that opens directly to the outside for emergency escape. This applies to all basement bedrooms, whether you're creating a secondary suite, finishing a basement for family use, or converting space for rental income.

Minimum egress window specifications in Ontario:

• Opening size: Minimum 0.35 square meters (3.8 square feet) of clear opening


• Minimum width: 380mm (15 inches)


• Minimum height: 380mm (15 inches)


• Maximum sill height: 1.5 meters (5 feet) above floor level


• Direct access: Must open directly to grade level or a window well with permanent ladder/steps

For basement applications, this typically means installing a window well with proper drainage, waterproofing, and safe egress steps. In Ottawa's climate, the window well must extend below the frost line (4 feet) and include proper drainage to prevent ice buildup and water infiltration.

Ottawa-Specific Considerations

Building permits are mandatory for egress window installation in Ottawa, as this work involves structural modifications and waterproofing. The City of Ottawa Building Code Services (613-580-2424) requires detailed drawings showing the window well construction, drainage plan, and structural support.

Timing matters in Ottawa's climate. The best time for egress window installation is late spring through early fall, as excavation work cannot be properly completed when the ground is frozen. Window wells must be designed to handle Ottawa's freeze-thaw cycles and significant snow loads.

Professional Installation Required

This is definitely not a DIY project. Egress window installation involves excavation, foundation cutting, waterproofing, structural support, and precise drainage systems. Improper installation can lead to basement flooding, foundation damage, or egress failure during an emergency.

A qualified contractor will ensure proper integration with your home's existing waterproofing system and coordinate the necessary inspections with the city.

Next Steps

If you're planning a basement bedroom or secondary suite, start with the egress window planning early in your project timeline. The installation typically takes 2-3 days but requires dry weather conditions and can add 4-6 weeks to your project timeline when including permit processing.

For a comprehensive assessment of your basement egress needs and a free estimate, contact Justyn Rook Contracting. We handle the complete process from permits through final inspection, ensuring your basement renovation meets all Ontario safety requirements.