The seller's playbook for old wiring
At Knob & Tube Kingston, roughly half the calls that start with "we're selling" come after a deal has already wobbled — an inspector found knob and tube on day 20, the buyer's insurer balked, and now everyone's lawyer is on the phone. The other half come from sellers who called before listing. The second group has a much better spring. If you're selling a pre-1950 home in Sydenham Ward, Portsmouth, Williamsville, Kingscourt or the Inner Harbour and it's never been fully rewired, this page is your playbook.
Disclose or hope? (The inspector settles it anyway)
The disclosure question comes up first, and the strategic answer is simpler than the legal one: it will be found. Knob and tube is the first thing a home inspector looks for in a Kingston century home — ceramic knobs along the basement joists, two-strand cloth wiring, two-prong outlets, a fuse panel. Nearly every buyer orders an inspection, and a deal that collapses at day 25 over "undisclosed" wiring costs you far more than transparency: weeks lost, a re-listing that other agents read as damaged goods, and a next buyer who now wonders what else you didn't mention. Whatever your lawyer advises on the disclosure form, plan the sale as if every buyer knows. Because they will.
Your two real options
Option 1 — rewire before listing. Spend the money up front (published ranges on our cost page: $5,000–$8,000 for a full bungalow rewire, $8,000–$15,000 for a two-storey, $14,000–$25,000 for a large century home including a 200-amp panel) and list a house whose feature sheet says "fully rewired, ESA Certificate of Inspection." What you buy with that: no insurance objections, no conditional-financing fall-throughs, no wiring discount, a faster close, and a buyer pool that includes the cautious first-timers who'd otherwise walk. In most cases the cost is recouped through price and speed — and the certificate is a marketing asset no fresh paint job can match.
Option 2 — sell as-is, with a written quote in hand. When timeline or cash rules out a pre-sale rewire, the next best move is to commission the assessment and quote yourself, before listing. Now when the inspector finds the wiring, you hand over a licensed electrician's written number instead of letting the buyer's imagination price the job. The quote becomes the price anchor: the discount conversation starts at the real figure — say $11,000 — not at the $30,000 the buyer's brother-in-law guessed. Deals survive because nobody is negotiating a mystery.
What doesn't work is the third option most sellers drift into: list, hope, and improvise when the inspection report lands. That's the version where the buyer holds every card — a dynamic we describe from their side on our buyer's guide, and it's worth reading to see exactly how a prepared buyer will play you.
What the buyer's insurer will demand — and why it's your problem
Even though it's not your policy, the buyer's insurance drives your closing date. Their lender requires proof of insurance to advance funds; most standard insurers — TD, Aviva and Intact among them — refuse homes with active knob and tube or surcharge 50–300%. The workable outcomes are either an ESA Certificate of Inspection proving the wiring is gone, or a conditional policy giving the buyer 30–90 days after closing to remediate — which insurers grant far more readily when a written quote from a licensed electrician is already in the file. Either way, in Ontario the work must be done by an ECRA/ESA Licensed Electrical Contractor under ESA permit and inspection; a cousin-with-a-toolbelt rewire produces no certificate and solves nothing. The full mechanism is on our insurance page.
The pre-listing package that strengthens any listing
Whichever option you choose, the same preparation serves both: a pre-listing electrical assessment, a written scope and quote, and — if you rewire — the ESA certificate. Sellers who walk into offer night with that package have answered the three questions every buyer, lender and insurer will ask, before they're asked. It typically costs nothing but a phone call to start, and it converts the scariest line in your inspection report into a solved problem with a number attached.
Listing this season? Start with the assessment now — a written quote in days, and if you choose to rewire first, most homes are done in 3–10 working days with the ESA certificate to follow. Request your free quote or call (613) 555-0199.