What are the egress window requirements for a basement bedroom in New Brunswick — is it different from Ontario code?

Yes, New Brunswick follows the National Building Code of Canada 2020 edition (effective May 1, 2025 for new applications), which has different egress requirements than Ontario's provincial building code. The key difference is that NB uses the NBC while Ontario has its own modified version.

For basement bedrooms in New Brunswick, every bedroom must have at least one openable window or exterior door that meets specific egress requirements. The window opening must provide a minimum clear area of 0.35 square meters (3.8 square feet) with no dimension less than 380mm (15 inches). The bottom of the opening cannot be more than 1.5 meters (5 feet) above the floor.

Window wells are critical for below-grade bedrooms — they must extend at least 760mm (30 inches) horizontally from the foundation wall and provide a clear area of at least 0.6 square meters (6.5 square feet). If the well is deeper than 760mm, a permanent ladder or steps are required. The well must also have proper drainage to prevent water accumulation.

Additional safety requirements include interconnected smoke alarms throughout the basement and main floors, plus carbon monoxide alarms if there's fuel-burning equipment or an attached garage. The basement bedroom needs a minimum ceiling height of 1.95 meters (6 feet 5 inches) and proper fire separation from any furnace room or storage areas.

Since you're dealing with a basement bedroom, you'll need a building permit from your local authority — either your municipality or Regional Service Commission if you're in a rural area. The permit process ensures the egress window installation meets NBC requirements and local zoning allows basement bedrooms.

Professional installation is strongly recommended for egress windows, especially if you're cutting through a foundation wall. This work affects your home's structural integrity and waterproofing. A qualified contractor will handle the foundation cutting, proper window well construction, drainage systems, and ensure the installation meets code requirements.

Before starting, verify your home's zoning allows basement bedrooms and check if you're in a flood-prone area — parts of the Saint John River valley and other low-lying areas have restrictions on basement development due to flooding risks.