How does the National Building Code apply to renovations in New Brunswick?

The National Building Code of Canada 2020 edition governs all renovations in New Brunswick, with enforcement handled by your local building inspection authority. New Brunswick adopted the NBC 2020 effective May 1, 2025 for new applications, making Tier 2 energy efficiency mandatory for new construction.

For renovations, the code applies differently depending on the scope of your project. Minor cosmetic work like painting, flooring, or cabinet replacement typically doesn't trigger code compliance requirements. However, once you start moving walls, changing electrical or plumbing systems, or altering the building envelope, you're entering code territory.

Structural modifications always require building permits and must meet current NBC standards. This includes removing walls (especially load-bearing ones), adding windows or doors, finishing basements, or building additions. The "25% rule" is particularly important - if you're renovating more than 25% of a building system (like electrical or plumbing), the entire system may need to be brought up to current code standards.

Electrical, plumbing, and gas work must be performed by licensed contractors regardless of project size. The NB Department of Justice and Public Safety - Technical Inspection Services (TIS) licenses all trades and conducts inspections. You'll need separate permits: electrical wiring permits come from NB Power (1-800-615-0522), while plumbing and gas permits come from TIS (1-888-659-3222).

Building permits are issued by either your municipality or Regional Service Commission (RSC) depending on your location. Cities like Moncton, Saint John, and Fredericton have their own building departments, while rural areas fall under one of the 12 RSCs. The permit authority determines which NBC requirements apply to your specific renovation.

Basement finishing is a common renovation that triggers multiple code requirements. You'll need proper ceiling height (minimum 1.95m or 6'5"), egress windows in bedrooms, interconnected smoke and carbon monoxide alarms, and adequate moisture control. Given New Brunswick's high water tables and frequent freeze-thaw cycles, proper waterproofing is essential.

Heritage properties face additional considerations under the Heritage Conservation Act. If your home is designated heritage or located in a heritage district (common in Saint John's Uptown, old Fredericton, or St. Andrews), consult your municipal heritage officer before making exterior changes.

The key is understanding that renovations don't get grandfathered under old codes - any work you do must meet current NBC 2020 standards. Contact your local building inspection office early in your planning process to understand exactly which requirements apply to your specific project and location.