Section 66.0731 - Reassessment of invalid condemnation and public improvement assessments(1) If in an action, other than an action under s. 66.0703(12), involving a special assessment, special assessment certificate, bond or note or tax certificate based on the special assessment, the court determines that the assessment is invalid for any cause, it shall stay all proceedings, frame an issue and summarily try the issue and determine the amount that the plaintiff justly ought to pay or which should be justly assessed against the property in question. That amount shall be ordered to be paid into court for the benefit of the parties entitled to the amount within a fixed time. Upon compliance with the order judgment shall be entered for the plaintiff with costs. If the plaintiff fails to comply with the order the action shall be dismissed with costs.(2) If the common council, village board or town board determines that any special assessment is invalid for any reason, it may reopen and reconsider the assessment as provided in s. 66.0703(10).1983 a. 532; 1987 a. 378; 1999 a. 150 s. 547; Stats. 1999 s. 66.0731.