How do I plan electrical for a future NB home addition?

Planning electrical for a home addition in New Brunswick requires thinking ahead — both for your immediate needs and for future flexibility — while working within TSANB permit requirements from the very start.

The most important first step is involving a licensed electrician during the design phase, before a single wall goes up. Electrical planning done after framing is complete costs significantly more and limits your options. A good electrician will assess your existing panel capacity, map out circuit requirements for the new space, and identify whether a panel upgrade is needed before the addition is even built.

Start With Your Existing Panel

Your current electrical panel is the foundation of the entire plan. Most older New Brunswick homes were built with 100A service, which was adequate for the time but often insufficient when adding square footage. A typical home addition — depending on size and use — may require one to four new circuits at minimum, and if you're adding a kitchen, bathroom, or workshop, potentially more. If your panel is already near capacity, a 200A panel upgrade ($2,000–$3,500) should be part of your addition budget from day one. Federal Pacific or Zinsco panels should be replaced regardless — they're fire hazards and no licensed electrician will add circuits to them.

Plan Circuits for the Addition Itself

Think through every intended use of the new space and plan circuits accordingly:

General living space needs at minimum 15A circuits for lighting and general outlets, with receptacles placed no more than 1.8m apart along walls (CEC requirement). Bedrooms in new construction require AFCI-protected circuits under the Canadian Electrical Code as adopted in New Brunswick. Bathrooms require GFCI-protected outlets within 1.5m of the sink (CEC Rule 26-700). If the addition includes a kitchen or kitchenette, plan for dedicated 20A circuits for countertop receptacles, plus separate circuits for the refrigerator, microwave, and any large appliances.

Also think ahead: rough in conduit or extra wire runs for things you might want later — a wall-mounted TV, under-cabinet lighting, a future EV charger in a new garage. Running an empty conduit during construction costs almost nothing compared to opening finished walls later.

TSANB Permits Are Non-Negotiable

Any electrical work in a home addition requires a TSANB permit pulled by your licensed electrician before work begins. The inspector will visit once work is complete to issue a Certificate of Compliance — which you'll need for your home insurance and for the building permit sign-off from your municipality (City of Moncton, Fredericton, Saint John, etc.). Unpermitted electrical work in an addition is a serious liability: insurance companies can deny claims, and it creates problems when you sell.

NB-Specific Considerations

New Brunswick's climate adds a few planning factors worth discussing with your electrician. If the addition has any exterior walls or an attached garage, plan for heated outlets or weatherproof covers to handle Maritime humidity and temperature swings. If you're in a coastal area near Saint John or Shediac, exterior fixtures should be marine-grade rated to handle salt air corrosion. And given NB's history of ice storm outages, this is an excellent time to discuss whether a whole-home generator connection makes sense — adding a transfer switch during construction is far cheaper than retrofitting later.

New Brunswick Electrical can match you with a licensed local electrician who can walk through your addition plans and provide a free estimate. Getting an electrician involved early is the single best thing you can do to keep your project on budget and code-compliant from the ground up.