Knob and Tube Replacement Cost in Kingston (2026 Prices)

Q: Is a partial replacement cheaper?

Usually much cheaper: $3,000–$6,000 versus $8,000–$15,000 for a full two-storey rewire. Many Kingston century homes were already partially rewired during past renovations, so only the remaining live knob-and-tube circuits need replacement. Whether partial is enough depends on your insurer's letter: what matters is that no active knob and tube remains, and the ESA certificate documents exactly that.

2026 price ranges for Kingston homes

Knob & Tube Kingston publishes real price ranges because "call for pricing" is exactly what a homeowner holding an insurance deadline doesn't need. The honest answer to "how much?" is a range, because every century home is different. But the range is knowable. Here it is for the Kingston market in 2026:

Partial replacement: $3,000–$6,000. Only the remaining live knob-and-tube circuits are replaced. The most common scenario in homes already partially rewired by previous owners
Full bungalow rewire: $5,000–$8,000. Every circuit in a single-storey home replaced with grounded NMD90 cable (the standard modern house wiring, the yellow or white cable you see in any new build)
Full two-storey rewire: $8,000–$15,000. More storeys means more fishing, more access openings, more labour
Large century home + 200 A panel upgrade: $14,000–$25,000. Wiring, panel and service all brought up to date in one project, with one ESA certificate covering everything

All ranges assume the work is done the only way it counts in Ontario: by a Licensed Electrical Contractor (ECRA/ESA), under an ESA permit, finishing with a Certificate of Inspection. What the work physically involves (fishing cable, minimal wall openings, 2–5 typical working days) is covered on our removal page.

What pushes your number up or down

Two Kingston houses with the same square footage can land at opposite ends of a range. The variables that matter:

Storeys. A bungalow with an open basement below and an attic above is the easiest case, because cable reaches every wall from above or below. Each additional storey adds fishing distance and access work
Finished walls and ceilings. Original plaster, finished basements and insulated cavities mean more strategic openings and more patching. Open joists are cheap; finished surfaces aren't
Panel age and capacity. If the house still runs a 60-amp service or an old fuse board, the panel usually has to be upgraded as part of the job. Insurers flag old panels for the same reasons they flag old wiring
Basement and attic access. A tight crawlspace or an attic buried in blown-in insulation (which is itself a hazard over knob and tube) slows everything down
How much was already rewired. The single biggest cost saver: a proper trace often finds that half the house is already modern, and you only pay for what's actually old

Victorian century home of the type common in Kingston's older neighbourhoods — Sydenham Ward, Portsmouth, Williamsville, Kingscourt, the Inner Harbour: Kingston's pre-1930 housing stock is where these budgets apply.

How insurance savings repay the rewire cost

Now compare the cost with the insurance savings. Ontario insurers (TD, Aviva and Intact among them) either refuse homes with active knob and tube or surcharge them 50–300% on high-risk coverage. After the rewire, the ESA Certificate of Inspection restores standard rates, which typically saves $500–$1,500 per year.

Compare that with the price tiers. A $4,500 partial replacement that saves $1,000 a year is fully repaid by premium savings in under five years, and the savings continue every year after. Even a $12,000 two-storey rewire is recovered within the time most families own the house. A documented, certified electrical system also adds value at resale. The full insurance mechanics are on our insurance page.

Spreading the cost

Many contractors offer staged or partial work: they replace the circuits the insurer flagged first and finish the rest in a later phase. That flexibility is real, but stage carefully against a deadline: if your conditional policy requires all active knob and tube gone within 30–90 days, the certificate has to cover the whole house by that date. Bring the insurer's letter to the quote appointment so the electrician can build the staging plan around it.

Why the cheapest quote can be the most expensive. A rewire done without an ESA permit produces no Certificate of Inspection. Without the certificate, your insurer's position doesn't change. You've spent thousands and still hold a refusal or a surcharge. Worse, unpermitted work usually has to be inspected and often redone before a certificate can ever be issued. If a price seems too good, ask one question: "Is the ESA permit included, and do I get the Certificate of Inspection?" If the contractor cannot answer yes to both, do not hire them.

The only number that actually matters is the one for your house. A licensed electrician traces the live circuits, and you get a free written quote within 24 hours. There is no obligation, and the quote is a real price, not a starting-from number.

From wide range to one written number

How the quote process works: free, fast and in writing.

Tell us about the house

Age, storeys, neighbourhood, and what triggered this (insurance letter, home inspection or renovation). Two minutes on the form or the phone.

Trace on site

A licensed electrician identifies which circuits are actually live knob and tube. That is often less than you fear, and never more than the written quote.

Written quote in 24 h

Fixed scope, ESA permit and inspection included, certificate at the end. A number you can hand to an insurer, a lender or a buyer.

You decide

Full, partial or staged: the plan matches your insurer's letter and your budget. If your insurer set a deadline, tell the electrician when you book. Deadline jobs are scheduled ahead of the rest.

Frequently asked questions

Why is the price range so wide?

Because two houses of the same size can be completely different jobs. The big variables: how many storeys the cable has to travel through, whether walls and ceilings are finished plaster or open framing, how accessible the basement and attic are, how much of the house was already rewired by previous owners, and whether the panel itself needs upgrading. A trace by a licensed electrician turns the wide range into one written number for your house.

Is a partial replacement cheaper?

Usually much cheaper: $3,000–$6,000 versus $8,000–$15,000 for a full two-storey rewire. Many Kingston century homes were already partially rewired during past renovations, so only the remaining live knob-and-tube circuits need replacement. Whether partial is enough depends on your insurer's letter: what matters is that no active knob and tube remains, and the ESA certificate documents exactly that.

Does the quote include the ESA permit?

It should, and every quote arranged through this site does. In Ontario the work must run under an ESA permit filed by a Licensed Electrical Contractor (ECRA/ESA), and the permit, the inspection and the Certificate of Inspection are part of the job, not extras. If a quote you're comparing does not mention the permit, ask about it. Leaving out the permit is a common way to make a price look lower.

Will I need a panel upgrade too?

Often, yes. Homes that still have knob and tube frequently still have a 60-amp service or an old fuse panel, and insurers flag those too. Doing the panel during the rewire is far cheaper than doing it as a separate project later. The large-century-home range of $14,000–$25,000 includes a 200-amp panel upgrade for exactly that reason.

Does insurance help pay for the rewire?

Insurers don't pay for the rewire itself. But the premium savings can return the full cost over time. Homes with active knob and tube face refusals or surcharges of 50–300%; after the rewire and ESA certificate, standard rates are restored, typically saving $500–$1,500 per year. On a partial replacement, the yearly savings can add up to the full job cost within about five years. Full details on our insurance page.

Can the work be staged to spread out the cost?

Sometimes. Many contractors offer staged or partial work: they replace the circuits your insurer flagged first, then finish the rest later. Be careful with staging against a deadline, though: if your insurer requires all active knob and tube gone within 30–90 days, the certificate has to cover the whole house by that date. Bring the insurer's letter to the quote so the staging plan matches it.

How Much Does Knob and Tube Replacement Cost in Kingston?