How much does it cost to add a dedicated 200-amp electrical sub-panel for a fully finished basement suite in a Dieppe home versus upgrading the main panel?

Adding a 200-amp sub-panel for a basement suite in Dieppe typically costs $1,500-$3,500 installed, while upgrading the main panel runs $2,500-$5,000 — but the main panel upgrade is often the better long-term investment for most Dieppe homes.

The choice between a sub-panel and main panel upgrade depends heavily on your existing electrical service and the basement suite's power requirements. Most homes in Dieppe built before 1990 have 100-amp or even 60-amp main panels, which struggle to handle a full basement suite plus the main house's electrical needs.

Sub-Panel Installation Costs:
A 200-amp sub-panel installation includes the panel box, breakers, heavy gauge feeder wire (typically 4/0 aluminum), and labour. In Dieppe, expect $1,500-$2,500 for a basic installation if your main panel has adequate capacity and space for the large feeder breaker. Add $500-$1,000 if the electrician needs to run the feeder wire through finished areas or if the distance from main to sub-panel exceeds 50 feet. The electrical permit through the City of Dieppe runs about $150-$200.

Main Panel Upgrade Costs:
Upgrading from a 60-amp or 100-amp service to 200-amp involves replacing the main panel, upgrading the service entrance cable from NB Power, and often updating the grounding system. Total cost in Dieppe ranges $2,500-$4,000 for a straightforward upgrade, or $4,000-$5,000 if the service entrance location needs to change or if the meter base requires replacement. NB Power charges $300-$800 for their portion of the service upgrade.

When to Choose Each Option:
If your existing main panel is 200-amp with available space for a large sub-panel feeder breaker, the sub-panel route makes sense. However, most older Dieppe homes benefit more from the main panel upgrade. A 60-amp main panel simply cannot safely handle a basement suite with electric heat, hot water, kitchen appliances, and laundry facilities. Even a 100-amp panel gets stretched thin when you add a full suite's electrical load to an existing house.

Basement Suite Electrical Requirements:
A proper basement suite needs dedicated circuits for the kitchen (minimum two 20-amp), bathroom GFCI protection, electric baseboard heating (if used), hot water heater, washer/dryer, and general lighting/outlets. This easily adds 80-100 amps of potential load. The NB Building Code requires GFCI protection for all basement outlets and AFCI protection for bedroom circuits.

Dieppe-Specific Considerations:
Many Dieppe homes from the 1970s-1980s subdivision boom have 100-amp panels that are nearly maxed out before adding a basement suite. The sandy soil in much of Dieppe provides good drainage, but older homes may still need sump pumps and dehumidifiers that add to electrical load. If you're planning electric heat for the basement suite (common in NB), factor in 30-40 amps just for heating circuits.

Practical Recommendation:
Get quotes for both options from licensed electricians. If the price difference is less than $1,500, choose the main panel upgrade — it future-proofs your home and often increases resale value more than a sub-panel installation. The main panel upgrade also eliminates the voltage drop issues that can occur with long sub-panel feeder runs.

Need help finding a qualified electrician for your Dieppe basement suite? New Brunswick Basements can connect you with local electrical contractors through the New Brunswick Construction Network who specialize in basement electrical work and understand Dieppe's housing stock.