Section 893.73 - Actions contesting governmental decisions(1) The following actions are barred unless brought within 180 days after the adoption of the order, resolution, ordinance or ordinance amendment contested: (a) An action to contest the validity of a county zoning ordinance or amendment, if s. 59.69(14) applies to the action.(b) An action to review the validity of proceedings for division or dissolution of a town under s. 60.03 .(2) The following actions are barred unless brought within 90 days after the adoption of the order, annexation ordinance or final determination of the action contested: (a) An action under s. 60.73 contesting an act of a town board or the department of natural resources in the establishment of a town sanitary district.(b) An action to contest the validity of an annexation, if s. 66.0217(11) applies to the action.1979 c. 323; 1981 c. 346; 1983 a. 532; 1995 a. 201; 1999 a. 150 s. 672; 2003 a. 214.2003 Wis. Act 214, which affected this section, contains extensive explanatory notes.
Under sub. (2), "adoption" refers to a legislative body's approval of an annexation ordinance. The statute of limitations begins to run on that date. Town of Sheboygan v. City of Sheboygan, 150 Wis. 2d 210, 441 N.W.2d 752 (Ct. App. 1989).