How Much Does Electrical Renovation Cost?
Electrical renovation costs in Ontario typically range from $5,000 to $30,000+, depending on the size of the home, the condition of the wiring, and the scope of upgrades. Smaller projects may cost under $10,000,
These ranges reflect typical residential projects across Toronto, Richmond Hill, Vaughan, Markham, Aurora, Newmarket and other parts of Ontario, and may vary depending on system condition and project complexity.
Average price to rewire a full House in Ontario:
Electrical renovation costs in Ontario vary based on the size of the home, the condition of the existing system, and the type of upgrades required. while average full rewiring or major renovations can exceed $25,000.
How much to upgrade wiring in the house
Electrical work is also one of the first systems upgraded during a renovation, as it directly impacts safety, capacity, and the performance of all other systems in the home.
Most homeowners underestimate electrical renovation costs because they do not account for system upgrades, rewiring, and code requirements. This guide breaks down real pricing based on actual project scenarios across Ontario.
An electrical renovation is not a single task. It is a system-level upgrade that may include:
- Rewiring
- Electrical panel upgrade
- Code corrections
- New circuits and load distribution
Electrical Renovation Cost by Project Type
| Renovation Type | Electrical Cost Range |
|---|---|
| Kitchen renovation | $2,000 – $8,000 |
| Bathroom renovation | $1,500 – $5,000 |
| Basement renovation | $3,000 – $10,000 |
| Full home renovation | $15,000 – $30,000+ |
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Average Electrical Renovation Cost in Greater Toronto
| Project Scope | Estimated Cost |
|---|---|
| Small renovation (1–2 rooms) | $2,500 – $8,000 |
| Partial home upgrade | $8,000 – $15,000 |
| Full home electrical renovation | $15,000 – $30,000+ |
These ranges depend on:
- Square footage
- Accessibility (open vs. finished walls)
- Age of wiring
- Electrical demand (EV chargers, HVAC, etc.
How Much Does It Cost to Rewire a House?
While this page focuses on electrical wiring costs for new construction, many homeowners also ask about the cost to rewire a house during renovations or upgrades.
Rewiring is typically more complex than new wiring because it involves working inside finished walls, removing outdated systems, and meeting current electrical code requirements. Costs can vary depending on the layout of the home, accessibility, and the electrical needs of each room.
Is Rewiring More Expensive Than New Wiring?
Yes. Rewiring a home is typically more expensive than the cost of new construction electrical wiring. In many cases, electrical costs in renovation projects are 20% to 30% higher—or more—due to labour, access limitations, and system upgrades.
New construction allows electricians to work with open walls, making installation faster and more cost-effective.
Typical Rewiring Cost by Room (Ontario Estimates)
| Room | Typical Cost Range (CAD) | What’s Included |
|---|---|---|
| Kitchen | $500 – $2,500 | Dedicated circuits, GFCI outlets, appliance wiring |
| Bathroom | $500 – $1,000 | GFCI outlets, lighting, and exhaust fan wiring |
| Living Room | $800 – $1,500 | Lighting, outlets, and entertainment system connections |
| Basement | $2,000 – $7,000 | Lighting, HVAC connections, outlets, and additional circuits |
| Garage / Outdoor | $1,000 – $5,000 | Underground wiring, GFCI outlets, lighting, EV charger readiness |
These estimates can vary depending on access to wiring, wall conditions, and whether panel upgrades or additional circuits are required.
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Electrical Renovation Cost by Real Scenarios
Full Home Electrical Renovation
This type of project may include:
- Complete rewiring
- Panel upgrade, often to 200 amp
- New circuits throughout the home
Estimated cost: $15,000 – $30,000+
Basement Electrical Renovation
This type of project may include:
- New circuits
- Lighting installation
- Outlets and switches
Estimated cost: $3,000 – $10,000
Panel Upgrade with Partial Wiring
This type of project may include:
- Panel replacement
- Selected circuit upgrades
Estimated cost: $5,000 – $12,000
If your project includes service capacity upgrades, see our electrical panel upgrade cost guide for detailed pricing.
Older Homes (Knob & Tube or Aluminum Wiring)
This type of project may include:
- Removal or isolation of outdated wiring
- Rewiring and safety upgrades
- ESA code compliance
Estimated cost: $10,000 – $25,000+
Whole House Rewiring Cost in Ontario
Whole-house rewiring is one of the most common and highest-cost components of an electrical renovation, especially in older homes.
In Ontario, homeowners often search for terms like how much does it cost to rewire a house, house rewiring cost per square foot, and rewiring cost for old homes.
Average Rewiring Cost
Most full rewiring projects range from:
- $8 to $15 per square foot, or
- $8,000 to $50,000+, depending on home size and complexity
| Home Type | Typical Cost Range |
|---|---|
| Small home or condo (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+ sq ft) | $30,000 – $50,000 |
These ranges are based on typical residential projects across Ontario and vary depending on access, wiring condition, and system requirements.
For a more detailed breakdown, see our electrical wiring cost guide.
What Is Usually Included in Whole House Rewiring
A full rewiring project may include:
- New copper wiring throughout the house
- New outlets and switches
- Dedicated circuits for major appliances
- Grounding and code corrections
- Arc fault and GFCI protection as required
- ESA permit and inspection
- In many cases, an electrical panel upgrade
This matters because homeowners often compare rewiring prices without realizing one quote may include panel work and another may not.
Why Rewiring Cost Changes So Much
Whole-house rewiring costs increase or decrease based on a few major factors:
- Home size: Larger homes need more wire, more circuits, and more labour.
- Number of storeys: Multi-level homes are more complex because wire runs between floors takes more time and coordination.
- Wall accessibility: If walls and ceilings are already open during a renovation, the job is much faster and cleaner.
- Number of new circuits: Modern kitchens, HVAC systems, EV chargers, and home offices often require more dedicated circuits than older homes were designed for.
Whole House Rewiring During Renovation vs. After Finishes
If rewiring is done during a renovation, costs are usually lower because electricians can work with open framing and easier access to the structure.
If rewiring is done after walls are finished, the cost usually increases because the work may involve:
- Opening walls and ceilings
- Working around finished spaces
- Extra patching and restoration
- More labour time for routing wire
That is why a rewiring project is usually more cost-effective when it is planned early as part of a larger renovation.
When Whole House Rewiring Makes Sense
Whole-house rewiring is often worth considering when:
- The home still has knob-and-tube wiring
- Aluminum wiring is present, and a full upgrade is the safer option
- The panel and circuits no longer support modern demand
- You are planning a major renovation, and the walls will already be open
- You want to add high-load equipment such as EV chargers, HVAC upgrades, or new appliances
How This Fits Into Total Electrical Renovation Cost
In a full renovation, rewiring is often one of the largest line items, but it is only part of the total budget. The final electrical renovation cost may also include:
- Panel replacement or service upgrade
- ESA permit and inspections
- New fixtures, outlets, and switches
- Code corrections
- Layout changes and circuit design
Electrical Renovation Cost by Home Size (Quick Estimates)
| Home Size | Typical Cost Range |
|---|---|
| 1,000 sq ft | $6,000 – $12,000 |
| 1,500 sq ft | $8,000 – $18,000 |
| 2,000 sq ft | $12,000 – $24,000 |
| 2,500+ sq ft | $15,000 – $30,000+ |
These are planning ranges only. Final cost depends on system condition and project scope.
Smart Home Electrical Renovation Cost
Smart home upgrades are usually added during an electrical renovation, when wiring and panel capacity are already being upgraded. This makes installation more efficient and cost-effective compared to retrofitting later.
In Ontario, smart home electrical upgrades typically start at around $1,500 and can range from $5,000 to $15,000+, depending on system size and level of integration.
What counts as smart home electrical work?
Smart home electrical work may include:
- Smart switches and dimmers
- Smart lighting systems
- Automation wiring and control hubs
- Thermostat and sensor wiring
- Future-ready circuits for automation
These upgrades are much easier to install during renovation while the walls are open.
Smart home wiring cost in Ontario
Smart home wiring cost in Ontario depends on access, home size, and system complexity. When wiring is installed during renovation with open walls, labour is lower. In finished homes, costs increase due to limited access and additional work.
- During renovation (open walls): more efficient and lower labour costs
- Finished homes: higher labour due to limited access
Typical range: $1,000 to $4,000+
Home automation installation cost
Home automation pricing varies based on system size:
- Basic setup (a few devices): a few hundred dollars
- Multi-room systems: $2,000 to $6,000+
Most homeowners researching this are comparing full-system installations rather than single devices.
Smart lighting installation cost
Smart lighting is one of the most common upgrades:
- Smart switches or dimmers: $100–$300 per point
- Per-room setup: $500–$1,500+
- Whole-home systems: $3,000+
Installing during renovation reduces labour significantly.
Smart panel and EV integration cost
If your renovation includes EV charger readiness or smart panel upgrades, additional work may be required:
- Dedicated circuits
- Panel capacity upgrades
- Load balancing for high-demand usage
What affects smart home renovation cost?
Key factors include:
- Home size
- Wall accessibility
- Number of circuits and devices
- Electrical panel capacity
- Level of automation
- Retrofit vs full renovation
Older homes usually cost more due to limited access and outdated wiring. Planning these upgrades during renovation helps reduce overall costs and ensures your electrical system can support future smart technologies.
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Electrical Cost as Part of Full Home Renovation
Electrical work is one part of the overall renovation budget, but it is one of the most critical systems in any project, directly affecting safety, capacity, and long-term performance.
In Toronto and across Ontario, full home renovation costs typically range from $100 to $400+ per square foot, depending on the scope, materials, and level of customization.
Within that budget, electrical work generally represents approximately 10% to 20% of the total renovation cost, depending on the condition of the existing system and the level of upgrades required.
Real-World Example
| Total Renovation Budget | Electrical Portion |
|---|---|
| $150,000 renovation | $15,000 – $30,000 |
| $250,000 renovation | $25,000 – $50,000 |
| $400,000 renovation | $40,000 – $80,000 |
These ranges reflect typical residential projects where electrical upgrades include wiring, panel improvements, and system adjustments.
In many renovation projects, electrical upgrades are not optional. They are required to safely support modern appliances, HVAC systems, and increased energy demand.
Electrical work is typically completed early in the renovation process because it affects all other systems, including heating, lighting, and load distribution.
Planning electrical upgrades at the beginning of a renovation helps avoid delays, redesign costs, and unexpected expenses later in the project.
How Electrical Renovation Cost Is Calculated
In larger renovation projects, electrical cost should always be evaluated as part of the total renovation budget, not as an isolated upgrade.
A simplified way to estimate is:
Total Cost = Wiring + Panel + Labour + Permits + Complexity
Breakdown
- Wiring: $4 – $9 per sq ft
- Panel Upgrade: $2,000 – $5,000+
- Labour: $65 – $130/hour
- Permits (ESA): $200 – $800+
Complexity factors include:
- Finished walls vs. open framing
- Number of circuits
- Load requirements
How Much of the Electrical Renovation Cost Is Wiring?
In many residential projects, wiring accounts for approximately 25% to 30% of the total renovation cost.
| Project Type | Wiring Share |
|---|---|
| Full home renovation | 25–30% |
| Old home rewiring | 40–60% |
| Panel-focused upgrade | 15–25% |
| Basement renovation | 30–40% |
Wiring costs increase when:
- Walls are finished
- Access is limited
- Additional circuits are required
For detailed pricing, see our Electrical Wiring Cost Guide.
When Do You Need an Electrical Renovation?
You may need an electrical renovation if:
- Lights flicker or circuits overload
- Your panel cannot support modern appliances
- Your home still uses knob-and-tube or aluminum wiring
- You are planning a major renovation or addition
- You want to install EV chargers, HVAC upgrades, or other high-load systems
What’s Included in Electrical Renovation Costs
1. Electrical Wiring
New circuits, outlets, and routing
2. Electrical Panel Upgrade
Required for modern load capacity
3. Permits & ESA Inspection
Mandatory in Ontario
4. Labour
Installation, troubleshooting, and system design
5. Devices & Fixtures
Switches, outlets, and lighting connections
Hidden Costs Homeowners Often Miss
- Opening and repairing drywall
- Removing unsafe or outdated wiring
- Additional circuits after inspection
- Unexpected code upgrades
These can increase the total cost if not planned early.
What Increases Electrical Renovation Cost
- Older homes with knob-and-tube or aluminum wiring
- Finished walls with limited access
- Higher electrical demand from EV chargers, HVAC, or major appliances
- System redesign requirements
EMF-Aware Electrical Design (Noradiation Approach)
Most electrical work focuses on function and code compliance.
At Noradiation, we also consider:
- EMF exposure
- Circuit placement in living and sleeping areas
- Wiring layout for long-term safety
This approach improves both safety and performance without compromising code compliance.
Get an Accurate Electrical Renovation Estimate
Every home is different.
The most reliable way to estimate your cost is through a professional assessment that evaluates:
- Existing wiring
- Electrical load
- Renovation scope
Start with an inspection to get a precise and safe plan for your home.
Frequently Asked Questions
What percentage of a renovation budget goes to electrical?
In many residential renovation projects, electrical work typically represents about 10% to 20% of the total budget, depending on scope, system condition, and required upgrades.
How much does it cost to rewire a house in Ontario?
Whole house rewiring in Ontario commonly ranges from $8 to $15 per square foot, or about $8,000 to $50,000+, depending on home size, access, and complexity.
Is rewiring cheaper during a renovation?
Yes. Rewiring during a renovation is often more cost-effective because open walls and ceilings reduce labour time, patching, and installation complexity.
What most increases electrical renovation costs?
The biggest cost drivers usually include outdated wiring, finished walls, panel upgrades, additional circuits, and higher electrical demand from modern appliances or EV chargers.