How much does it cost to rewire a house in Ontario?

Whole house rewiring in Ontario costs $8-$15 per square foot. Small homes under 1,200 sq ft cost $8,000-$15,000 CAD, average homes (1,200-2,500 sq ft) cost $15,000-$30,000 CAD, and large homes (2,500-4,000 sq ft) cost $30,000-$50,000 CAD. This includes new panel, wiring, outlets, switches, and ESA inspection.

What is included in whole house rewiring?

Whole house rewiring includes: new 200A electrical panel, all new NMD90 copper wiring, new tamper-resistant outlets including GFCI in kitchens and bathrooms, new switches, dedicated circuits for appliances, updated grounding system, arc fault breakers in bedrooms, and ESA permit and inspection.

How long does it take to rewire a house?

Whole house rewiring typically takes 3-14 days depending on home size. Small homes (under 1,200 sq ft) take 3-5 days, average homes (1,200-2,500 sq ft) take 5-7 days, and large homes (2,500+ sq ft) take 7-14 days. Work during renovations when walls are open is faster.

When should I rewire my house?

You should consider rewiring if your home has knob and tube wiring, aluminum wiring from 1965-1975, you're doing major renovations with open walls, you experience frequent breaker trips or flickering lights, your insurance requires updated wiring, or you're adding major appliances like EV chargers or hot tubs.

Can I save money by rewiring during renovations?

Yes, rewiring during renovations when walls are already open can save 20-40% on labour costs. Electricians don't need to cut access holes, fish wires through finished walls, or patch drywall afterward. If you're planning a major renovation, coordinate electrical rewiring at the same time.

Do I need to leave my home during rewiring?

You typically don't need to leave during rewiring. Power may be off in sections of the home during work hours, but electricians usually restore power to essential circuits (kitchen, bathroom) by end of each day. Some homeowners choose to stay elsewhere during extensive work for convenience.

Whole House Rewiring Cost in Ontario

Planning a major renovation or need to update your home's entire electrical system? Learn about whole house rewiring costs in Ontario. All prices in Canadian dollars.

Get Free Quote: +1 866 565 5427

Whole house rewiring involves replacing all the electrical wiring in your home, from the main panel to every outlet, switch, and light fixture. This is typically needed for homes with outdated wiring (knob and tube, aluminum, or degraded wiring), homes undergoing major renovations, or when upgrading to meet modern electrical demands.

While it's a significant investment, rewiring your Ontario home ensures safety, increases property value, and allows you to power all your modern appliances and devices without worry.

Average Whole House Rewiring Costs

The cost to rewire a house in Ontario depends primarily on the home's size, number of storeys, accessibility of walls, and the number of circuits needed.

Ontario Rewiring Costs (CAD)

Per Square Foot $8 - $15

Small Home (under 1,200 sq ft) $8,000 - $15,000

Average Home (1,200-2,500 sq ft) $15,000 - $30,000

Large Home (2,500-4,000 sq ft) $30,000 - $50,000

200A Panel Upgrade (included) $1,400 - $1,800

ESA Permits & Inspection $250 - $600

What's Included in Whole House Rewiring

New Electrical Panel

200A breaker panel to handle modern electrical loads safely

All New Wiring

Modern NMD90 copper wiring throughout the entire home

New Outlets

Tamper-resistant outlets, including GFCI in kitchens/bathrooms

New Switches

Modern switches for all lights and fans

Dedicated Circuits

Separate circuits for appliances, HVAC, and high-draw items

Grounding System

Proper grounding for safety and surge protection

Arc Fault Breakers

AFCI protection in bedrooms as required by code

ESA Inspection

Final inspection and certificate from ESA

Factors That Affect Rewiring Cost

Home Size

$8 - $15 /sq ft

Larger homes require more wire, more outlets, more circuits, and more labour hours.

Number of Storeys

+15-25% per storey

Multi-storey homes are more complex. Running wire between floors adds time and cost.

Wall Accessibility

Save 20-40%

Open walls during renovation = easier access. Finished walls require cutting and patching.

Number of Circuits

$150 - $300 /circuit

Modern homes typically need 20-40 circuits. More circuits = more capacity but higher cost.

When Should You Rewire Your Home?

Whole house rewiring makes the most sense in certain situations:

Knob and tube wiring: If your home has K&T, full replacement is recommended
Aluminum wiring: Homes from 1965-1975 may have problematic aluminum wiring
Major renovation: If walls are already open, rewiring is much cheaper
Frequent electrical issues: Tripping breakers, flickering lights, burning smells
Insurance requirements: Some insurers require updated wiring
Home sale preparation: Modern wiring increases home value
Adding major appliances: EV charger, hot tub, AC, etc.

View Knob & Tube Pricing →

How Long Does Rewiring Take?

Small Home

3-5 days

Under 1,200 sq ft, single storey, accessible walls or during renovation.

Average Home

5-7 days

1,200-2,500 sq ft, 2 storeys, typical GTA home configuration.

Large Home

7-14 days

2,500+ sq ft, multiple storeys, complex layout, many circuits.

During Renovation

Faster

Open walls significantly speed up the process. Coordinate with your contractor.

Quick Reference: Rewiring Pricing

Condo / Small Bungalow

$8,000 - $15,000 CAD

Under 1,200 sq ft. Includes 200A panel, all new wiring, outlets, switches, ESA inspection.

Average Detached Home

$15,000 - $30,000 CAD

1,200-2,500 sq ft. Most common scenario for GTA homes. Full modernization.

Large / Luxury Home

$30,000 - $50,000 CAD

2,500-4,000 sq ft. Complex layouts, many circuits, premium finishes.

During Major Renovation

Save 20-40%

If walls are already open, labour costs drop significantly. Plan ahead!

Whole House Rewiring Service Areas

KoljiBros Electrical provides whole house rewiring across the Greater Toronto Area and Southern Ontario.

Toronto Mississauga Brampton Vaughan Oakville Burlington Hamilton Etobicoke North York Richmond Hill

Get Your Free Rewiring Quote Today

Every home is different. KoljiBros Electrical provides free, no-obligation quotes for whole house rewiring. We'll assess your home, explain your options, and provide transparent pricing.

Call Now: +1 866 565 5427 Request Free Quote

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