The rule of thumb
Almost nothing is an automatic dealbreaker. The real question is always the same three parts: what will it cost to fix, can you still insure the home, and is anyone unsafe in the meantime? Answer those and a flag becomes a number you negotiate — or, occasionally, a reason to move on. See the full map in red flags in a listing.
Usually negotiable (get a quote, adjust the offer)
- Is poly-B plumbing a dealbreaker? — a repipe is a known number; the catch is insurance.
- Is a foundation crack a dealbreaker? — most cracks are minor; a few aren't.
- Is radon a dealbreaker? — a high reading is a cheap, routine fix.
- Is aluminum wiring a dealbreaker? — usually a low-cost connection fix.
Depends — confirm insurability first
- Is knob-and-tube wiring a dealbreaker? — insurable, but often only through specialty carriers.
- Is an oil tank a dealbreaker? — fine if clean and documented; a leak is the risk.
- Is Kitec plumbing a dealbreaker? — you can't rely on the old class action anymore.
Each of these can affect whether you can insure — and therefore finance — the home. See homes insurers won't cover in Canada.
How to turn a flag into a negotiation
The move is the same every time: confirm the issue with the right licensed pro, get a written quote, confirm insurability with your broker, and use the number in your offer — as a price reduction, a seller repair, or a condition you can walk on. Budget with the repair cost guide.