What are the egress window requirements in Ottawa?

Egress windows in Ottawa must meet Ontario Building Code requirements, which specify minimum sizes and opening mechanisms for bedroom windows to ensure safe emergency exit.

In Ottawa, egress window requirements fall under the Ontario Building Code (OBC) and are enforced by the City of Ottawa Building Code Services. Here's what you need to know when working with contractors on basement bedrooms or bedroom renovations:

Ontario Building Code Egress Requirements

Every bedroom in Ottawa must have at least one openable window that meets these minimum requirements:

• Minimum opening area: 0.35 square meters (3.8 square feet)


• Minimum opening height: 380mm (15 inches)


• Minimum opening width: 510mm (20 inches)


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


• No security bars or permanent obstructions that prevent opening from inside

For basement bedrooms specifically, window wells must be at least 760mm (30 inches) wide and project at least 760mm from the foundation wall. If the window well is deeper than 760mm, it must include a permanent ladder or steps.

Permit Requirements in Ottawa

When hiring contractors for basement finishing or bedroom additions that include egress windows, you'll need a building permit from the City of Ottawa. The permit application must show:

• Window specifications meeting OBC requirements


• Window well dimensions and drainage details


• Structural modifications if enlarging existing openings

Contact City of Ottawa Building Code Services at 613-580-2424 or visit ottawa.ca/building to confirm permit requirements for your specific project. Permit fees typically range from $200-800 depending on the scope of work.

What to Watch For When Hiring Contractors

Many homeowners get caught off-guard by egress requirements when finishing basements. Red flags include contractors who:

• Suggest bedrooms without proper egress windows


• Claim permits aren't needed for "just adding a bedroom"


• Don't mention window well requirements for below-grade windows


• Quote prices that seem too low (often missing permit and egress costs)

Always verify your contractor understands OBC egress requirements and includes proper permits in their quote. A legitimate contractor will explain these requirements upfront and factor permit costs into their estimate.

Getting It Right

When reviewing contractor quotes for basement bedrooms or renovations involving bedrooms, ensure they specify:

• Exact window dimensions and opening mechanisms


• Window well construction details and drainage


• Building permit applications and fees


• ESA electrical permit if adding outlets (required in bedrooms)

The City of Ottawa building inspectors will verify egress compliance during final inspection, so there's no cutting corners on these safety requirements. Working with contractors who understand local code requirements from the start will save you time, money, and ensure your family's safety.

For complex egress situations or heritage homes with unique challenges, consider getting a pre-consultation with City of Ottawa Building Code Services before finalizing contractor agreements.