What is the minimum bedroom size required by Ottawa building code?

The Ontario Building Code requires a minimum of 7 square meters (75 square feet) for a bedroom, but Ottawa's zoning bylaws add additional requirements that effectively make bedrooms larger in practice.

Under the Ontario Building Code, any room used for sleeping must have at least 7 square meters of floor area. However, this is just the starting point for bedroom requirements in Ottawa. The room must also have a minimum ceiling height of 2.3 meters (7.5 feet) in most areas, though some basement bedrooms can have slightly lower ceilings in specific zones.

Ottawa's zoning bylaws layer additional requirements on top of the building code. For secondary suites and rental units, Ottawa requires bachelor units to be at least 28 square meters total, and one-bedroom units to be at least 37 square meters total. This means your bedroom will typically need to be larger than the 7-square-meter minimum to accommodate the required living space, kitchen, and bathroom within these unit size requirements.

Every bedroom in Ottawa must also have proper egress - meaning a window or door that leads directly outside or to a common area, with specific size requirements for emergency escape. Basement bedrooms have additional requirements including window wells that meet minimum dimensions and proper drainage.

For renovation projects involving new bedrooms, especially in basements or secondary suites, you'll need a building permit through the City of Ottawa. The permit process ensures your bedroom meets not just size requirements, but also fire separation, insulation, electrical, and ventilation standards. Processing typically takes 2-4 weeks for straightforward bedroom additions.

Professional guidance is essential when planning bedroom additions, particularly in basements where ceiling height, egress windows, and moisture control become critical factors. What seems like a simple size requirement actually involves complex interactions between building code, zoning, fire safety, and mechanical systems.

For a free consultation on your bedroom addition or renovation project, contact Justyn Rook Contracting - we'll ensure your project meets all Ottawa requirements while maximizing your usable space.