The house is owned equally under Family Law only when a divorce is in progress....it then falls under community property. Prior to that if it is only in one spouses name nothing can be attached to the other spouse. Just as one spouse can not force the other to sell except to liquidate for divorce purposes.
It also must be the matrimonial home lived in by both.
Any additional houses do not fall under same criteria, since in Ontario it is now a no fault divorce jurisdiction. Changed a number of years ago.
Gone are the days that the wife got half or all of everything. Thank God