Buyers in Leslieville have gotten good at reading inspection reports. They know to expect knob-and-tube wiring in a semi built before 1930, they budget for it, and they move forward anyway. Then, days before closing, the deal collapses. Not because anyone found something new. Because the buyer's insurance company won't put a policy in force on a house with live knob-and-tube, and a financed purchase cannot close without one.
That's the mechanism most guides to buying an older home skip past. The inspection flags the wiring. The negotiation happens. Everyone signs. Then a separate clock starts, one that runs on the insurer's timeline instead of the transaction's, and it can end the deal after the conditions are already gone.
The Clock Nobody Puts in the Offer
An inspection contingency protects a buyer from what the report finds. It does nothing about what happens after the report is accepted and the offer goes firm. That's the gap where knob-and-tube causes the most damage in Leslieville right now.
Once financing is arranged, most lenders require proof of insurance before they'll release funds on closing day. If the insurer won't bind a policy, or will only bind one on the condition that the wiring is certified removed within a set window, that condition lands on the buyer after they've already waived their inspection contingency. A buyer who priced in the wiring during negotiation can still find themselves without coverage, without a closing date, and without the leverage they had two weeks earlier when the deal was still conditional. Ontario's spring 2026 market has already shown how easily a firm deal can unwind on financing terms that surface late, and a stalled insurance binder produces the same result through a different door.
Why This Is a Leslieville Problem Specifically
This isn't a generic older-home issue. It's a building-stock issue, and Leslieville's stock is a particular kind. The neighbourhood was built out largely between 1890 and 1930 as workers' cottages and semis, the same era that produced most of Toronto's surviving knob-and-tube wiring. Riverdale, Cabbagetown, and Roncesvalles share the same exposure, but Leslieville's density of semi-detached and row housing from that window means a buyer touring five listings on one Saturday is likely touring five houses with some version of the same electrical system behind the plaster.
The wiring itself isn't automatically dangerous or illegal to leave in place. The problem is that it was designed for a house running a handful of light bulbs and a radio, not a modern kitchen, air conditioning, and an entertainment system running at once. Original insulation on wiring that old has typically gone brittle, and decades of attic insulation upgrades, done for energy efficiency, have often smothered the open-air cooling the system depended on. None of that shows up as a crack in a wall. It shows up as a line item on an insurance application.
What Insurers Are Actually Doing in 2026
The home inspector's job is to flag that knob-and-tube is present. Whether a buyer can get insured is a separate question, and the honest answer depends on which carrier they call. As of 2026, the pattern among major Canadian insurers looks roughly like this:
| Insurer position | What it means for a Leslieville buyer |
|---|---|
| Aviva, Intact, TD Insurance, Wawanesa, Belair Direct | Will not bind a new policy on a home with energized knob-and-tube. New policies typically require an Electrical Safety Authority Certificate of Inspection confirming the wiring has been removed. |
| Square One Insurance | Will insure with a surcharge, commonly in the $800 to $2,000 per year range, and requires a visible-wiring inspection first. |
| Allstate Canada | Coverage varies by province and by underwriter discretion. Some will insure with conditions, others decline outright. |
A buyer who assumes their existing insurer will simply transfer coverage to a new address is the buyer most likely to discover this two weeks before closing. The fix isn't complicated, but it has to happen early: call the insurance broker before the inspection contingency window closes, not after, and get a written answer on that specific property, not a general quote.
The Cost of Getting Ahead of It
For a seller, the smarter play is often to remove the uncertainty before it becomes the buyer's problem. A full rewire of a typical Toronto two-storey home in 2026 runs $8,000 to $15,000, including a panel upgrade, grounded outlets, and the Electrical Safety Authority certificate an insurer will accept. Larger or more complex homes, especially those with plaster walls that make fishing new wire harder than in a drywall house, can run $20,000 to $30,000. Partial rewiring of priority circuits alone runs lower, generally $3,000 to $8,000, but most electricians will say plainly that partial work doesn't satisfy an insurer looking for a clean certificate, because a policy conditioned on full removal isn't reinstated by a partial fix.
Framed as a repair estimate, those numbers look like a cost. Framed as the thing standing between a buyer and a bound insurance policy, they're closer to a negotiating tool. A seller who gets an electrician's written assessment before listing, even without doing the rewire, gives their listing something most Leslieville comparables in this price range won't have: a documented answer to the question every buyer's broker is about to ask.
The Paperwork Layer Most Buyers Don't Read Closely
Ontario sellers are not required to complete a Seller Property Information Statement, and in the Toronto market most choose not to, largely on legal advice. Real estate lawyers have generally recommended against it because a signed SPIS creates a document a buyer can later use in a misrepresentation claim if any answer turns out to be wrong, even by honest mistake. Declining to sign one doesn't reduce what a seller has to disclose. It just means the disclosure happens through other channels.
Since December 1, 2023, the Trust in Real Estate Services Act has required real estate agents themselves to provide buyers with written disclosure of material facts they're aware of, independent of whether a SPIS exists. In practice, that means a Leslieville buyer working with a good agent shouldn't be relying on a form the seller may have skipped. They should be asking direct written questions about the electrical system and getting direct written answers, which is a stronger position than hoping a checkbox got filled out correctly.
The Real Estate Council of Ontario lays out how this works from the seller's side, including the distinction between a statement prepared for a buyer and one prepared only for an agent's internal use.
A Practical Sequence for Both Sides
For a buyer touring Leslieville semis this fall:
- Ask your agent to request written confirmation on the electrical system as part of the offer, not just a general inspection clause.
- Call your insurance broker with the specific address before your conditions expire, not after firm.
- If knob-and-tube is confirmed active, get a quote from a licensed electrical contractor before you remove your financing condition, so the number is real rather than assumed.
For a seller preparing to list a century home near Greenwood Park or along Queen Street East:
- Get a written electrician's assessment ahead of listing, even if you don't plan to do the rewire yourself.
- Decide with your lawyer whether that assessment becomes something you disclose in writing to interested buyers or something you hold for your own file.
- Price the home with the wiring question already answered, rather than leaving it for a buyer's broker to raise as a surprise at week three.
FAQ
Does knob-and-tube wiring make a house impossible to insure? No. It makes it harder to insure with a mainstream carrier without conditions. Several major insurers will still write a policy if the wiring is certified removed or if the buyer accepts a surcharge from a carrier that permits it, such as Square One.
Is knob-and-tube wiring illegal in Ontario? No. Existing knob-and-tube wiring is not illegal to leave in a house. The pressure to remove it comes from insurance underwriting, not from the electrical code itself.
Leslieville's older homes carry a specific set of questions that don't show up the same way in newer construction, and the wiring question is the one most likely to surface late in a deal rather than early. If you're weighing an offer on a century semi, or getting one ready to list, Amanda Beecham can walk through what a specific property's electrical history means for your timeline before it becomes a problem at the closing table. Let's Connect.
