If the other spouse refuses to consent, the spouse who wants to sell can apply to the Court of King's Bench for an order authorizing the sale, a route that involves a lawyer and typically takes longer than a straightforward listing.
The Family Property Act separately governs how the eventual proceeds are divided, so a court order to sell does not by itself decide who gets what; that is a second, related question the same court process usually addresses.
A hand-reviewed valuation from Joel Dyck, done before either spouse takes a position to a lawyer, often removes the disagreement that led to a refusal in the first place. Get your hand-reviewed valuation from Joel Dyck.