North York West homeowners are increasingly being asked by insurers to address active knob & tube wiring before coverage issues become more serious. Get a free assessment today

Knob & Tube Wiring Specialists

Knob & Tube Wiring Replacement North York West

North York West includes a broad mix of housing, from detached family homes and post-war brick bungalows to split-level houses, condo buildings, townhome developments, and mid-rise apartments along major corridors. In older pockets of the area, original knob and tube wiring can still be hidden in attics, finished basements, wall cavities, and older lighting circuits. Our ESA-licensed electricians replace that outdated wiring with a modern code-compliant system so your North York West home is safer, easier to insure, and better suited to today’s electrical demand.

ESA Licensed 7015453
5M Insured
4.9 Google Rated
Knob and tube wiring before replacement Toronto home

Actual job photos

Ceramic knobs on old Toronto wiring Degraded knob and tube insulation fire hazard

Why Knob & Tube Wiring Must Be Replaced

Across North York West, especially in Bathurst Manor and Clanton Park, many older homes still rely on electrical systems installed long before modern kitchens, home offices, cooling equipment, and higher everyday appliance loads became normal.

No Ground Wire

This older wiring method only carries hot and neutral conductors, so today’s outlets and appliances do not receive the grounding protection expected in a modern electrical installation.

Deteriorating Insulation

The original cloth and rubber insulation often becomes brittle, splits, and breaks away over time, leaving energized conductors more exposed inside concealed framing spaces.

Overloaded Circuits

These circuits were never intended to support the combined draw of modern appliances, chargers, computers, portable cooling, and the electrical usage common in current households.

Insurance Cancellation

Active knob and tube can create serious problems during policy renewals, refinancing, or resale, and many owners are told to replace it before standard coverage will continue.

Buried by Insulation

Knob and tube depends on open air around the conductors, so once attic insulation covers active runs, heat can build up in conditions the system was never engineered to tolerate.

Reduced Home Value

Buyers, home inspectors, and lenders often treat active knob and tube as a major deficiency, which can slow negotiations and complicate financing or closing.

Is Your Insurer Threatening Cancellation?

We can inspect the system, explain the scope in writing, and move quickly on North York West rewiring work so you have a clear path forward before coverage is affected.

Before & After Real Rewiring Jobs

These photos show the kind of knob and tube replacement work we complete in older west-end and central homes, including the detached houses and bungalows found across North York West.

Before knob and tube wiring in Toronto home junction box Before
After new modern wiring replacing knob and tube in Toronto After
New labelled electrical panel after knob and tube rewire Toronto

A neatly organized panel with clearly identified breakers after the legacy wiring has been removed and the electrical system has been rebuilt to current code requirements.

What We Find in North York West Homes

In North York West and around Downsview and Yorkdale-Glen Park, we regularly uncover porcelain knobs, ceramic sleeves, cloth-wrapped conductors, and old splice points hidden above finished ceilings and inside wall cavities.

Finance Your Rewiring Project

Use this estimator to preview payment options for a North York West knob and tube replacement project before scheduling your in-home assessment.

$
1,000 100,000

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Purchase amount
Term60 months
Amortization period
Administration fee149.00

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Subject to credit approval. Actual interest rate, purchase amount, credit limit, payments and terms are subject to change and may vary upon approval. Payment and interest rate apply to term only. For illustrative purposes only. Not a final offer.

Our Knob & Tube Rewiring Services

From full rewires in Bathurst Manor to targeted upgrades near Maple Leaf and Yorkdale-Glen Park, we handle the complete scope of replacing unsafe legacy wiring in older North York West homes.

Full Home Rewire

We remove active knob and tube throughout the house and install a complete new wiring system built for present-day lighting, outlets, appliances, and normal household demand.

Partial Rewire & Targeted Circuits

If only certain sections still contain energized legacy wiring, we can isolate those areas and replace the specific circuits that still need correction.

Panel Upgrade

Many older homes need panel improvements at the same time so the new wiring has proper capacity, cleaner circuit organization, and the protection expected in a modern system.

ESA Permit & Inspection

We manage the ESA permit and inspection process so the finished work has the approval record buyers, lenders, and insurers often ask to see.

Insurance Assessment Letter

If your insurer needs confirmation quickly, we can inspect the property and provide a written assessment describing what remains active and what work is required.

GFCI & AFCI Upgrades

We install the protective devices required for kitchens, bathrooms, bedrooms, exterior outlets, and other locations covered by current electrical code rules.

Attic Insulation Clearance

Where insulation is covering active knob and tube, we complete the electrical replacement first so the attic can be upgraded safely afterward.

Pre-Sale Rewire

We help sellers remove a major electrical concern before listing or closing so the transaction is less likely to stall over outdated wiring issues.

Want to Know What It Costs?

See our pricing guide for knob and tube replacement, including how access, panel work, and overall project scope can affect the final cost.

View Full Cost Guide

How We Replace Knob & Tube Wiring

Our process keeps a North York West rewiring project organized, clearly staged, and easier to manage from the first inspection through final approval.

1

Free Assessment

We visit your North York West home, inspect the attic, basement, panel, and accessible wall areas, and determine exactly where active knob and tube is still in service.

2

Written Quote

You receive a detailed proposal outlining labour, materials, permit-related work, and any recommended upgrades before the project begins.

3

ESA Permit

We open the required ESA permit so the work is documented properly and completed under the correct Ontario approval process from the start.

4

Careful Rewire

Our electricians route new cable strategically, remove obsolete conductors, and fish wiring carefully to limit unnecessary openings wherever practical.

5

ESA Inspection

Once the installation is complete, the work is inspected so you receive formal approval showing the rewiring passed and the record is complete.

6

Final Walkthrough

We test the circuits, label the panel clearly, confirm that devices are working properly, and review the finished work with you before the job is closed out.

Why North York West Homeowners Choose Kolji Bros

Older houses near Bathurst Manor and Maple Leaf often contain a mix of original wiring, later additions, and partial upgrades that need experienced troubleshooting before replacement starts.

ESA Licensed & Insured

We complete rewiring under ESA/ECRA licence 7015453, carry full insurance, and provide the documentation that matters for insurer acceptance and long-term safety records.

North York West Old-Home Specialists

We understand the electrical layouts found in older central and west-end homes, including attic runs, basement ceiling routes, hidden splices, and mixed-era additions from past renovations.

Minimal Drywall Disruption

We plan routing carefully and fish where practical so the project stays efficient without creating more patching and repair work than necessary.

Transparent Pricing

Your quote is laid out before work starts, and if hidden conditions appear during the job, we explain the issue clearly before any extra scope moves ahead.

Fast Turnaround

Most homes are completed within a practical 3-to-7-day range, with the work staged to keep the property as usable as possible during the project.

4.9 Google Rating

Homeowners regularly mention clear communication, tidy workmanship, and dependable follow-through, which is reflected in the company’s 4.9 Google rating.

North York West Neighbourhoods We Serve

We handle knob and tube rewiring across North York West and the surrounding residential pockets where older detached homes, bungalows, and mixed-era electrical systems are still common.

Bathurst Manor
Clanton Park
Downsview
Yorkdale-Glen Park
Maple Leaf
Amesbury
Pelmo Park-Humberlea
Lawrence Manor
Wilson Heights
Ledbury Park
Westminster-Branson
Lansing-Westgate

Not Sure If You Have Knob & Tube?

Call us or send a message through the contact form and we’ll arrange an inspection to confirm what is active, what is abandoned, and what should be replaced first.

Call +1 866 565 5427

What North York West Homeowners Say

These review examples reflect the kinds of knob and tube replacement jobs we regularly handle in North York West and nearby residential pockets.

“Our insurer gave us a short deadline on our bungalow in Bathurst Manor after active knob and tube was found in the attic and on several second-floor lighting circuits. Kolji Bros moved quickly, kept the disruption under control, and got us the ESA paperwork we needed.”

RM
Rina M.Homeowner, Bathurst Manor

“We were finishing our basement in Downsview and discovered old knob and tube still feeding part of the lower level plus several kitchen receptacles upstairs. Their crew sorted out the unsafe mix of old and newer wiring, upgraded the panel, and coordinated properly with our renovation schedule.”

DK
Daniel K.Homeowner, Downsview

“Our house in Yorkdale-Glen Park still had active knob and tube in the attic along with an older detached-garage feed that worried our buyer’s inspector. Kolji Bros replaced the remaining circuits, labelled everything properly, and helped us get the sale over the line without electrical surprises.”

SL
Sarah L.Homeowner, Yorkdale-Glen Park

Knob & Tube Wiring FAQ North York West

These are the questions we hear most from North York West homeowners dealing with older wiring, insurer deadlines, and renovation discoveries.

Yes, it can be. The main concerns usually involve aging insulation, lack of grounding, hidden modifications from earlier work, and a system that was never intended for current household electrical demand. Once active runs are buried under insulation or tied into later wiring, the risk becomes much harder to ignore.
Homes built during the earlier decades of the area may still contain some original wiring. Common signs include porcelain knobs mounted on framing, ceramic tubes passing through wood members, cloth-covered two-wire conductors, and older ungrounded receptacles or lighting circuits.
The total cost depends on the house size, accessibility of the attic and wall spaces, how much active wiring remains, and whether panel work is included. For a broader pricing breakdown, visit our knob and tube rewiring cost guide.
Yes. This kind of rewiring in Ontario must be carried out under an ESA permit and inspected when the installation is complete. That gives you official proof the work was completed properly and approved.
In most cases, yes. After the rewiring is completed under permit and the ESA inspection is passed, you receive a Certificate of Inspection that can be given to the insurer as confirmation the issue has been corrected properly.
Usually yes. We organize the work in phases so the home stays as functional as possible during the project, although certain circuits still need planned shutdowns while they are being replaced or transferred over.
Most single-family rewiring projects are completed in roughly 3 to 7 working days. Smaller homes usually move faster, while larger houses with finished ceilings, extra circuits, or service upgrades can take longer.
If active knob and tube is buried beneath attic insulation, the electrical issue should be handled before more insulation work goes ahead. We replace the old wiring first so the attic can be upgraded properly afterward.

Knob & Tube Replacement in Nearby Areas

We also serve the neighbouring communities connected to North York West across the north and west side of Toronto.

Ready to Make Your North York West Home Safer and Easier to Insure?

If an insurer, buyer, or home inspector has raised concerns about outdated wiring, we can assess the system, explain the scope clearly, and complete a code-compliant rewire for your North York West property.

ESA Licensed 7015453
4.9 Google Rating
5M Insured
ESA Permit Included