How much does it cost to upgrade my electrical panel for an addition in Ottawa?

Not every addition needs an electrical panel upgrade, but many do, and it is better to find out early. Whether yours does depends on your existing service size and what the addition will draw. An electrician determines that with a load calculation that adds up your home's existing load plus the new space, including heating, appliances and any special circuits.

As broad perspective only, a typical service and panel upgrade can range from roughly $3,500 to $7,000, depending on whether the service entrance cables and meter base also need replacing. Treat that as perspective, not a quote. Older homes with small services are more likely to need the larger job.

What pushes an addition toward an upgrade:

• Electric heating in the addition, such as baseboards or in-floor heat
• A kitchen or kitchenette with a range, dishwasher or other high-draw appliances
• A bathroom with heated floors
• Future plans such as an EV charger, hot tub or heat pump

Planning for future circuits during the rough-in is far cheaper than retrofitting later, so tell your electrician about anything you might add.

The electrical rough-in for the addition itself is a separate cost from any panel work. It covers new circuits from the panel, outlets, lighting, dedicated appliance circuits, and smoke and carbon monoxide alarms. Depending on the layout, a sub-panel in the addition may be simpler than running every circuit back to the main panel; ask your electrician.

Who does the work: electrical work needs an ESA notification or permit and is done by an electrical contractor licensed by ESA. Electricians are a compulsory trade in Ontario, and you can check an individual's authorization on the Skilled Trades Ontario Public Register. The City of Ottawa does not require a building permit for work that is exclusively electrical, but your addition itself still needs one. Ask your electrician to provide the ESA paperwork when the work is complete.

If the service entrance is being upgraded, the local utility has to be involved to disconnect and reconnect power. Ask your electrician to start that coordination early and to confirm current scheduling times with the utility.

When comparing quotes, ask each electrician to show the panel or service upgrade separately from the addition rough-in, and to state what the load calculation found. You can browse electrical and addition contractors in the Ottawa Construction Network directory at justynrookcontracting.com and compare.

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