What are the egress window requirements for a legal basement bedroom in Ontario?

For a legal basement bedroom in Ontario, you must have an egress window with a minimum opening of 3.8 square feet (0.35 m²) and no dimension smaller than 15 inches (380mm). This is a strict requirement under the Ontario Building Code - without proper egress, the room cannot legally be called a bedroom.

The egress window must open directly to the exterior and be easily operable from the inside without keys or tools. The window sill cannot be more than 3 feet (900mm) above the basement floor, ensuring occupants can quickly exit in an emergency. These requirements exist because basement bedrooms need two means of egress - the main stairway to upper floors, and the emergency window exit.

Window wells are typically required when installing egress windows in basements. The well must extend at least 36 inches from the window and be wide enough to allow a person to climb out. In Ottawa's climate, proper drainage is crucial - window wells need weeping tile connections and waterproof membranes to prevent water infiltration during spring melt and heavy rains. The well must also have a permanent ladder or steps if the depth exceeds 24 inches.

Installation complexity varies significantly based on your basement's construction and existing window openings. Cutting through concrete foundation walls requires structural assessment, especially in older Ottawa homes built before modern codes. The process involves excavating exterior space, cutting the foundation, installing the window and well system, and ensuring proper waterproofing - work that typically requires building permits and professional installation.

Electrical Safety Authority (ESA) permits are required if you're adding electrical outlets or lighting to the new bedroom, which is standard practice. The City of Ottawa Building Code Services will inspect both the structural work and the completed bedroom to ensure compliance. Processing time is typically 2-3 weeks for straightforward egress window permits.

Professional installation is strongly recommended due to the structural, waterproofing, and permit requirements involved. DIY installation risks foundation damage, water infiltration, and failed inspections that could delay your project significantly. In Ottawa's market, professional egress window installation typically ranges from $3,000-$6,000 depending on foundation type, excavation requirements, and window well complexity.

For a comprehensive basement bedroom renovation including proper egress windows and all code requirements, contact Ottawa Basements for a free consultation. We handle the entire process from permits to final inspection, ensuring your basement bedroom meets all Ontario Building Code requirements.