Electrical Planning Mistakes to Avoid During Renovations

Jan 22, 2026Renovations & Electrical Planning

Electrical Planning Mistakes to Avoid During Renovations

Renovations are the best time to upgrade your electrical system. Proper planning prevents costly rework, delays, and safety issues in homes and commercial spaces across Hamilton & Halton.

Common Renovations
Kitchens, basements, additions, retail build-outs, office renovations and tenant improvements.
Frequent Oversights
Insufficient outlets, undersized panels, missing permits, poor lighting layouts and no future-proofing.
Best Practice
Involve a licensed electrician early — before walls are closed and finishes are installed.

Electrical planning should never be an afterthought during renovations. Whether you’re updating a home or reconfiguring a commercial space, electrical needs almost always increase. Failing to plan for modern loads, lighting design, and future upgrades can lead to overloaded circuits, code violations, and expensive tear-outs later.

Key Electrical Considerations During Renovations

  • Panel capacity: Renovations often require panel upgrades to support added circuits.
  • Outlet placement: Modern layouts need more receptacles than older code minimums.
  • Lighting design: Recessed lighting, task lighting and dimming should be planned in advance.
  • Dedicated circuits: Kitchens, offices, HVAC and EV chargers require their own circuits.
  • Future expansion: Planning now avoids costly upgrades later.

Costly Electrical Mistakes Renovators Often Make

  1. Skipping permits and inspections, leading to failed ESA approvals.
  2. Relying on extension cords instead of installing permanent outlets.
  3. Underestimating lighting needs, resulting in dark or uneven spaces.
  4. Not upgrading old wiring while walls are open.
  5. Ignoring energy efficiency opportunities during the renovation.

Local insight: In Hamilton’s older homes and mixed-use buildings, renovations often uncover outdated wiring or undersized panels. Addressing these issues during the renovation phase is significantly cheaper than fixing them after finishes are complete.

Typical Electrical Costs During Renovations

Minor electrical additions such as new outlets, lighting circuits, or device upgrades typically range from $600–$2,000. Larger renovation projects involving panel upgrades, rewiring, or service changes often range from $3,500–$15,000+ depending on scope and building type.

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Safety reminder: Electrical work performed during renovations must meet current ESA code — even if the rest of the building is older. DIY or unpermitted work can delay projects and create insurance issues.

Plan Your Renovation Electrical Work Properly

Serving Hamilton, Burlington, Oakville, Milton & surrounding areas.

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