In practice this comes up most with siblings selling an inherited home, or a couple splitting up, and the fix is the same either way: agree on a process before you list, such as pricing from a professional valuation rather than each person's own number, and set a rule in advance for how you will respond to offers.
The Family Property Act governs how a matrimonial home is divided between separating spouses, and a lawyer should be involved before listing whenever the parties are not fully aligned, so the sale itself does not become the venue for resolving the disagreement.
A neutral, hand-reviewed number often does more to settle a stuck negotiation between co-owners than another round of each side naming their own price. Get your hand-reviewed valuation from Joel Dyck.