Where the disagreement is between spouses, The Family Property Act sets out how a court divides the proceeds if the parties cannot settle it themselves, and a refusal to sell can be tested through the Court of King's Bench rather than left unresolved indefinitely.
Where the disagreement is between co-owners who are not spouses, such as siblings who inherited a property, the same principle applies: one owner cannot force title to transfer without the others' signatures on the listing and the purchase agreement.
A hand-reviewed valuation gives everyone with a signature to give one number to react to, which is usually the fastest way through the disagreement. Get your hand-reviewed valuation from Joel Dyck.