The Homesteads Act, 1989 sits over top of whichever path is chosen: neither spouse can sell, mortgage or transfer the family home without the other's written consent or a court order, regardless of who is named on title with Information Services Corporation.
Where the two spouses cannot agree on value, the Court of King's Bench can decide based on competing appraisals, though most files avoid that cost and delay by agreeing on a single independent valuation upfront and sharing the fee.
An accurate, documented home value is the number the entire division ultimately runs through. Get your hand-reviewed valuation from Joel Dyck.