Wis. Stat. § 846.11: Homestead, how sold.

If any defendant appear and answer that any portion of the mortgaged premises is an exempt homestead the court shall ascertain whether such be the fact, and if so whether the part of the mortgaged premises not included in the exempt homestead can be sold separately therefrom without injury to the interests of the parties, and in that case shall direct in the judgment that the exempt homestead shall not be sold until all the other mortgaged lands have been sold.