What is an egress window and do I need one?

An egress window is a specially sized window that provides a safe emergency exit from a basement bedroom, and you're required to have one if you want to legally use any basement room as a bedroom in Ottawa.

An egress window must meet specific size requirements under the Ontario Building Code: minimum 3.8 square feet of opening area, with no dimension less than 15 inches wide or 24 inches high. The window sill can't be more than 44 inches above the floor. These dimensions ensure a person can quickly escape through the window during an emergency like a fire, and that emergency responders can enter if needed.

When You Need an Egress Window

If you're finishing your basement and want any room to legally qualify as a bedroom, you must install an egress window in that room. This applies whether you're creating a master bedroom, guest room, or bedroom in a secondary suite. Without proper egress, the room can only be classified as a den, office, or recreation room - never a bedroom. This distinction matters significantly for resale value, insurance coverage, and legal rental situations.

For secondary suites and basement apartments in Ottawa, egress windows are mandatory for all bedrooms. The City of Ottawa Building Code Services strictly enforces this requirement, and you won't pass your final inspection without compliant egress windows. Many homeowners discover this requirement late in their renovation, which can add unexpected costs and delays.

Ottawa-Specific Considerations

In Ottawa's clay soil conditions, egress window installation typically requires excavating a window well 4-6 feet deep to reach below the frost line. The window well must be properly waterproofed and include drainage systems to prevent water accumulation. Given our freeze-thaw cycles, proper installation is crucial to avoid future foundation issues. Installation costs in Ottawa typically range from $3,500-$6,500 per window, including excavation, waterproofing, and the window well system.

Professional Installation Required

Egress window installation involves structural modifications to your foundation, excavation, waterproofing, and electrical work for proper drainage. This isn't a DIY project - it requires building permits, professional installation, and inspections. The work must be coordinated carefully to maintain your foundation's integrity while creating the opening.

If you're planning a basement renovation with bedrooms, factor egress windows into your initial budget and timeline. Contact Ottawa Basements for a free consultation to assess your specific situation and ensure your basement project meets all safety and legal requirements from the start.