Wis. Stat. § 786.06: Realty of wards; grounds for mortgage, sale, lease.

Any real estate, or interest therein belonging to a minor or to an individual adjudicated incompetent may be sold, mortgaged or leased:

(1) When the personal property and the income of the real estate of such minor or individual adjudicated incompetent are together insufficient for the payment of his or her debts or for the maintenance and education of himself or herself and family;

(2) When the interests of such minor or individual adjudicated incompetent require or will be substantially promoted by such disposition on account of such real estate or interest therein being exposed to waste or dilapidation, or being unproductive, or for other peculiar reasons or circumstances.