Is knob and tube still found in Vancouver homes?

Yes, knob and tube (K&T) wiring is absolutely still found in Vancouver homes — particularly in character houses, Craftsman bungalows, and older properties built before the 1950s in neighbourhoods like Kitsilano, Mount Pleasant, Strathcona, Commercial Drive, and the West Side.

Knob and tube was the standard wiring method from roughly the 1880s through the 1940s. It gets its name from the ceramic knobs that anchor the wires to framing and the ceramic tubes that protect wires where they pass through joists and studs. The system uses two separate conductors (hot and neutral) with no ground wire, which is the core of why it's a concern in modern homes.

Why it matters today comes down to a few key issues. First, K&T has no ground wire, meaning it can't safely support modern three-prong appliances and devices. Second, the rubber insulation on the wires degrades over time — after 70+ years, it becomes brittle and can crack, creating shock and fire hazards. Third, and critically in Vancouver, many older homes have had insulation added over the decades. K&T was designed to dissipate heat through open air — burying it in blown-in insulation traps that heat and significantly increases fire risk. This is a known hazard that Technical Safety BC (TSBC) takes seriously.

From an insurance standpoint, this is where Vancouver homeowners often get a rude awakening. Many BC home insurers will refuse to cover a home with active K&T wiring, or will charge significantly higher premiums. When you're buying an older home in East Van or Kitsilano, your insurance broker will ask directly about the wiring — and if K&T is present and active, you may struggle to get coverage at standard rates.

What it costs to address varies considerably. A full rewire of a typical Vancouver character home (1,200–1,800 sq ft) generally runs $12,000–$25,000+ in the Metro Vancouver market, depending on home size, accessibility, whether it's a heritage property, and how much of the K&T is still active versus already replaced in sections. Partial rewires targeting specific circuits or panels run less, but insurers often want full replacement. All electrical work must be done by a licensed electrical contractor and inspected by Technical Safety BC (TSBC) — this is not a DIY project under any circumstances.

What you should do if you suspect your home has K&T wiring: start with a licensed electrician for an assessment. They can identify how much K&T is active, whether any previous owners did unsafe DIY splicing (very common in older Vancouver homes), and what a full remediation would involve. If you're buying an older home, make sure your home inspector specifically checks for K&T and comments on its condition and extent — not all inspectors are equally thorough on this point.

You can find licensed electricians serving Metro Vancouver in our directory at the Vancouver Construction Network. Make sure any electrician you hire is licensed with Technical Safety BC and pulls the proper permits — electrical work without permits creates serious liability issues when you eventually sell.