⚠️ Junction homeowners are increasingly being asked to deal with active knob & tube wiring before insurers will continue standard coverage. Get a free assessment today →
Knob & Tube Wiring Replacement Junction
The Junction is known for its older west-end housing stock, including late-19th and early-20th-century detached homes, brick semis, narrow lots with rear additions, and character properties stretching toward Dundas West, Annette Street, and Junction Triangle. Many of these houses still conceal active knob and tube wiring behind plaster walls, above refinished ceilings, and in attics or basements that have been altered over generations of updates. Our ESA licensed electricians replace outdated electrical systems in Junction homes with modern, code-compliant wiring designed for current appliance loads, safety expectations, and insurance requirements.
▲ Actual job photos
Why Knob & Tube Wiring Must Be Replaced
Many Junction homes were built for a very different electrical era, long before modern kitchens, basement living spaces, air conditioning, and higher plug-in demand became standard.
No Ground Wire
These older systems were installed without a grounding path, leaving less protection when faults occur and offering fewer safeguards for sensitive modern equipment.
Deteriorating Insulation
After decades inside framing cavities, the original insulation can become fragile, break apart, and expose energized conductors where safe separation once existed.
Overloaded Circuits
Older circuits in Junction houses are often stretched far beyond their original purpose once kitchens, bathrooms, laundry areas, and finished basements are upgraded.
Insurance Cancellation
Active knob and tube can lead to insurance warnings, reduced renewal flexibility, or demands for corrective electrical work before standard coverage continues.
Buried by Insulation
When attic insulation covers active knob and tube wiring, the conductors lose the open-air cooling that old design relied on, creating a more serious hazard.
Reduced Home Value
Homes with active legacy wiring can face tougher buyer scrutiny, slower transactions, and added complications during financing, inspection, and insurance review.
⚠️ Is Your Insurer Threatening Cancellation?
We can inspect your Junction property, determine what older wiring is still active, and move quickly on rewiring so you have the documentation your insurer may request.
Before & After: Real Rewiring Jobs
Actual photos from Kolji Bros knob and tube replacement projects in Junction and nearby areas such as Bloor West Village and High Park.
Before
After
New panel with clearly labelled, code-compliant breakers — installed as part of a full rewire
What We Find in Junction Homes
Older homes near Junction Triangle and High Park North often reveal porcelain supports, aging cloth insulation, concealed splices, and mixed rewiring from different renovation periods.








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Our Knob & Tube Rewiring Services
From full-home rewires in Junction to targeted upgrades near High Park North and Bloor West Village, we handle older-house electrical replacement from start to finish.
Full Home Rewire
We replace active knob and tube wiring throughout the property and install a modern electrical system that better suits current code and everyday use.
Partial Rewire & Targeted Circuits
When only part of the home still relies on active old wiring, we can isolate and replace those circuits without making the project larger than necessary.
Panel Upgrade
Many older Junction homes also need a panel upgrade so the completed system has proper capacity, clearer organization, and safer circuit protection.
ESA Permit & Inspection
We handle the permitting process, perform the work to code, and coordinate inspection so the project closes with proper approval paperwork.
Insurance Assessment Letter
If your insurer needs a documented review of active older wiring, we can inspect the home and provide written findings to support your file.
GFCI & AFCI Upgrades
As part of the electrical upgrade, we add modern protective devices required for safer performance and better alignment with current code standards.
Attic Insulation Clearance
Where knob and tube wiring has been buried under insulation, we remove the unsafe conductors first so the attic can be handled correctly afterward.
Pre-Sale Rewire
Replacing active knob and tube before listing can reduce buyer hesitation, improve insurability, and help prevent delays caused by electrical concerns.
💰 Want to Know What It Costs?
Detailed pricing for knob and tube rewiring in Junction — based on house size, access conditions, and whether a panel upgrade is part of the project.
View Full Cost Guide →How Our Rewiring Process Works
We follow a clear process so Junction homeowners understand what wiring is still active, how the work will be staged, and what happens from inspection through final approval.
Inspection & Quote
We inspect your Junction property, trace the active knob and tube wiring, and provide a written quote based on the actual rewiring scope.
Permit & Planning
After approval, we file the ESA permit and organize the work sequence so shutdowns, access, and scheduling are handled properly.
Safe Rewire
Our electricians disconnect and replace the outdated conductors with modern wiring while keeping the project controlled and methodical.
Panel & Circuit Labelling
Where needed, we upgrade the panel and label the finished circuits clearly so the completed system is easier to manage and maintain.
ESA Inspection
We coordinate the final inspection so the completed rewiring is reviewed and approved through the proper official process.
Certificate for Records
Once the work passes inspection, you receive the paperwork needed for insurance records, resale questions, and future reference.
Why Homeowners Choose Kolji Bros
Junction homes often combine age, plaster finishes, rear additions, basement upgrades, and tight access routes that require careful planning during a rewire.
Older Home Experience
We work in aging west-end houses where plaster walls, finished basements, additions, and partial past rewires all affect how the project should be approached.
Insurance-Focused Documentation
Because many rewiring projects start with an insurance concern, we keep findings, permits, and inspection-related records organized from the beginning.
Clean, Planned Work
We stage the work carefully, protect occupied areas, and reduce unnecessary disruption so the property remains more manageable during the rewire.
Clear Communication
We explain what remains active, what needs priority replacement, and how access, panel work, and existing finishes shape the timeline.
Code-Compliant Upgrades
We do more than remove old conductors; we upgrade the affected system with proper protection, organization, permit coverage, and inspection-backed completion.
Trusted Local Reputation
Homeowners call us when they want licensed electricians who understand older wiring risks and complete the job with care rather than shortcuts.
What Local Homeowners Say
Recent clients in Junction, Baby Point, and High Park North called us when aging wiring began affecting renovations, insurance timelines, and daily electrical reliability.
“We were renovating a brick semi in Baby Point and found active knob and tube feeding the second floor and rear addition. Kolji Bros rewired those circuits, cleaned up the panel layout, and kept our renovation moving.”
“Our insurer flagged old attic wiring in our High Park North house and gave us a short deadline. Their team inspected the property, replaced the unsafe runs, and provided the documents we needed after the ESA inspection.”
“We bought an older place near Bloor West Village and uncovered a confusing mix of old and newer wiring while redoing the kitchen and basement laundry. Kolji Bros sorted out the active knob and tube and clearly labelled every finished circuit.”
Junction Neighbourhoods We Serve
We handle knob and tube rewiring throughout Junction and nearby west-end pockets, including older homes near Junction Triangle, High Park North, and Baby Point.
Not Sure If You Have Knob & Tube?
Call us or fill out our contact form. We'll schedule a quick inspection and tell you exactly what you have — no pressure, no obligation.
Call +1 866 565 5427Nearby Areas We Also Serve
We also provide knob and tube replacement in neighbourhoods connected to Junction, including Bloor West Village, High Park, and Roncesvalles.
Frequently Asked Questions
Need Knob & Tube Wiring Replaced in Junction?
Book an assessment with Kolji Bros Electrical for your Junction property. We identify active legacy wiring, explain the safest upgrade path, and complete ESA-permitted rewiring that helps protect your home, your insurance position, and your future renovation or resale plans.

