Wis. Stat. § 786.07
The application for the disposition must be made to the circuit court of the county in which the real estate or some part thereof is situated or to the circuit court of the county in which the guardian for the minor or individual adjudicated incompetent has been appointed, by petition of the guardian of the minor or of the individual or by any relative or other person in behalf of either. The petition must be verified and must set forth the facts which would authorize the selling, mortgaging or leasing of the real estate or some part of the real estate for one or more of the reasons set forth in s. 786.06. If the real estate sold or some part of the real estate is situated in a county other than that in which the proceeding is taken, a certified copy of the order confirming the sale containing the name of the purchaser, the selling price and a description of the property sold shall be recorded in the office of the register of deeds of the county in which the real estate or any part of the real estate is situated. When the minor or individual adjudicated incompetent has a guardian and the application is to any court other than the court in which the guardian was appointed, notice of hearing of the application shall be given by mailing a copy of the notice to the judge of the court that appointed the guardian, and also to the guardian, unless he or she is the petitioner, at least 10 days before the date of the hearing.
Wis. Stat. § 786.07