Barrie · Alectra Utilities service area
Rewiring older Barrie homes and adding the circuits you need
A house in Allandale built before the First World War and a 1970s home in Letitia Heights hide very different wiring. We find out what's in your walls first, then plan the work in stages you can live with.
Barrie's older housing
A century of wiring along the bay
Barrie grew outward from its waterfront. The oldest blocks around Dunlop Street, Allandale and Codrington hold brick and frame houses from the early 1900s, many renovated several times since. Every renovation tends to leave its own wiring behind. A redone kitchen may have modern cable while the bedrooms keep older two-wire cable, with a basement splice joining the two.
Insurers in Simcoe County ask the same questions as insurers in Toronto: is any original wiring still live, and how old is the panel? Buyers' home inspectors ask them too. If you can't answer, the honest first step is to find out, not to start opening walls.
What turns up in older Barrie homes
Knob-and-tube wiring was installed in Ontario houses until roughly the 1940s. It has no ground wire, and its cloth and rubber insulation becomes brittle with age. Where it survives, it's usually in attic spaces and walls nobody has had a reason to open. Homes built from the mid-1960s to the late 1970s may instead have aluminum branch wiring, which needs devices rated for it and careful connections.
By era
Matching the plan to the house
Ages are approximate. A Barrie house that has been renovated may hold more than one era at once.
| When built | Where in Barrie | What we look for | A typical plan |
|---|---|---|---|
| Before 1950 | Allandale, downtown, Codrington, the East End | Knob-and-tube or early two-wire cable still in use | Assess, then rewire in phases, usually with a panel upgrade |
| 1950s to 1980s | Letitia Heights, Sunnidale | Ungrounded circuits, aluminum branch wiring in some homes, crowded panels | Replace or repair the weak circuits and add grounded ones |
| 1990s onward | Ardagh, Holly, Painswick, Innis-Shore, the south end | Too few circuits for how the house is now used | New circuits for a basement, office, garage or kitchen |
Newer Barrie homes
Not old, just under-wired
Houses from the 1990s and 2000s in Holly, Painswick and Innis-Shore usually have sound grounded copper wiring. What they lack is circuits. Builders wired for the plan on the sales sheet. They didn't plan for a basement gym, a two-monitor home office or a garage workshop.
That kind of work often fits in one visit. Think of an office circuit, garage GFCI outlets, a freezer line or outlets moved for a TV. If you're building a basement unit, the wiring is planned with the second household's kitchen, laundry and smoke and carbon monoxide alarms in mind.
Outlets that feel warm
A loose or failing connection. Stop using it and have it checked.
Two-prong outlets upstairs
A sign of ungrounded circuits in an older house.
One breaker for half the floor
Circuits overloaded by today's appliances.
Lights flicker when the dryer runs
A shared circuit or a connection that needs attention.
Rewire and panel together
Why the two jobs are often paired
New circuits need breakers, and the panel in an older Barrie home is rarely able to take them. Doing the Barrie panel upgrade in the same project means each new circuit lands in a panel built for it. Alectra also only needs to come out once. For a full overview of how we run rewiring jobs, see our home wiring page.
Plan the order
Assessment first, walls last
We map what's there, then decide which rooms to do first. Kitchens, bathrooms and anything showing heat damage usually lead.
Book an assessmentQuestions
Wiring and rewiring in Barrie: questions
Could my Allandale house still have knob-and-tube wiring?
It's possible in a home of that age. Knob-and-tube is the early system of single wires run on ceramic knobs and through ceramic tubes, with no ground. Many houses had it replaced long ago, often only in part. An inspection of the panel, basement and attic shows whether any of it is still connected.
My Barrie house is from the early 1970s. Does it have aluminum wiring?
Some homes built from the mid-1960s to the late 1970s used aluminum for the branch circuits. You can sometimes see it printed on the cable in an unfinished basement. We confirm it at an inspection and check the connections, which is where problems usually start.
Can we keep living in the house while it's rewired?
Usually, yes. We work in phases so most of the house has power each night. The order is planned around bedrooms, the kitchen and anyone working from home. Each phase is permitted and inspected before the next starts.
Are you licensed and insured?
Yes. Marrast Contracting is a Licensed Electrical Contractor, licence ECRA/ESA 7016430, and every job is led by Shaldin Marrast, a Master Electrician. You can check our licence on the Electrical Safety Authority's contractor lookup at esasafe.com.
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