Cost to Rewire an Occupied House vs an Empty One

Rewiring a lived-in home typically costs $10,500 for a 100 m² house, within a usual range of $8,150 – $13,600 before GST/HST. An empty house is cheaper to rewire because electricians can work room by room without protecting your belongings or restoring power every evening. Here is where the difference comes from and how to decide.

Why occupancy changes the price

We build our rewiring estimates from labour hours × local rates, plus materials, then check them against market prices and real quotes. Occupancy mostly affects the labour hours, not the cable.

In an occupied house, the crew has to:

• Work in phases, so the house keeps heat, a working kitchen and some lighting overnight.
• Move and cover furniture, then put it back, room by room.
• Set up temporary circuits and re-energize sections daily.
• Control dust around people, pets and anything you cannot move out.
• Finish one area before starting the next, rather than opening every wall at once.

In an empty house, the crew can isolate the whole supply, open up every room at the same time and work without daily set-up and clean-up. That is faster, and a faster job costs less.

The two options in our model

You can see the gap by comparing the two occupancy settings on the same job:

• Lived in during the work: $10,500
• Empty house: $8,950

Both figures are the typical mid-range cost before GST/HST. The difference is what you are paying for the convenience of staying put. Weigh it against the cost of living elsewhere, which depends on your family and local rents.

The bigger swing: finishing and walls

Occupancy is not the only thing that moves the price. Two other choices often matter more, and they interact with it.

Wall construction. Older homes with plaster-and-lath walls are harder to fish cable through without damage:

• Standard construction: $10,500
• Plaster-and-lath: $12,600

Finishing. Do you want holes and chases filled and left ready for decorating, or replastering and redecorating?

• Filled, ready for decorating: $10,500
• Replaster and redecorate: $12,500

This is the hidden cost for occupied homes. If you live there, you probably cannot leave bare patched walls for months, so many owners add redecorating. In an empty house, you can often schedule decorating as a separate job later, or combine it with other work.

Which situation suits which choice?

Stay put if:

• Only part of the house needs work, such as the kitchen and one floor.
• The wiring is in reasonable shape and you can accept a longer job.
• Moving out would cost more than the occupancy premium.
• You have young children or anyone who needs the house for medical reasons, and a phased approach keeps essentials running.

Move out if:

• The whole house needs rewiring, including a new panel.
• You already plan a larger renovation, such as a kitchen or bathroom. See our guides to Kitchen remodel and Bathroom remodel.
• The house has plaster-and-lath walls and you plan to replaster anyway.
• You can stay with family or rent short term for a few weeks.

Combine it with other work

Opening walls once is cheaper than opening them twice. If you are considering a new panel for an EV charger or a heat pump, schedule it now. Our guides to EV charger installation and Heat pump installation show what those projects add. Likewise, if a kitchen or bathroom is on the list, doing the wiring first, with the walls open, avoids paying twice for patching.

Rules to know

Electrical work in Ontario must be done by a licensed electrical contractor, who files the permit or notification with the Electrical Safety Authority (ESA). Elsewhere in Canada, electrical work needs licensed trades and usually a permit. Check that any quote includes the permit and inspection. GST/HST applies to renovation work, and our figures are before tax.

How to get a fair quote

• Ask each contractor to price both options: occupied and empty, or phased and all at once.
• Ask what is included for patching, plaster repair and painting. This is where quotes differ most.
• Confirm whether the quote includes a new 200 A panel or keeps the existing one. Compare it with $10,500 for a new panel against $7,000 for keeping the board.
• Ask how many days the power will be off and how the crew will keep heat and the fridge running.

Once you have quotes, run them through our "is my quote fair" tool. It compares your figures with the live cost model, so you can see whether the occupancy premium or the finishing allowance looks out of line.

The materials table

For a full breakdown of wall types and what they do to the price:

Material	Typical	Usual range	Lifespan
Standard construction	$10,500	$8,150 – $13,600	–
Older home with plaster-and-lath walls	$12,600	$9,850 – $16,400	–

Start with the cost guide for House rewiring if you want the whole-house picture before you decide how to handle the occupancy question.