It does not set the value
What someone paid years ago is a fact about that year. Market value is what a qualified, willing buyer will pay now, and the market takes no interest in the seller's purchase price, their mortgage balance, their renovation receipts, or what they need for their next home.
Buyers reach for the old purchase price because it is concrete and easy to find. It is a worse guide than the least similar recent comparable sale, because at least the comparable happened in this market.
Why it can still be worth knowing
Not for value — for flexibility. A seller with substantial equity has options a seller with very little does not:
- Room to negotiate at all. A seller close to their limit may genuinely be unable to accept a lower number, however motivated they are. That is a floor rather than a bargaining position, and it changes how you approach the whole deal.
- The ability to absorb a repair after an inspection, rather than having to refuse one.
- Willingness to move on possession dates and other terms, which are often worth more to you than a few thousand dollars on the price.
The purchase price does not tell you what the home is worth. It occasionally tells you what the seller is able to say yes to.
How to find it, and what not to do with it
Prior sale history is available to a REALTOR®, and the sold information a consumer sees requires a free registered account under Alberta's MLS® data rules. Ask for the whole picture rather than one figure: previous listings, previous prices, how long it has been owned.
Then handle it carefully. Opening a negotiation with what the seller paid is a reliable way to lose whatever flexibility they had. Use it privately to understand the room; make the case on comparable sales. Reading seller motivation →