65 ILCS 90/19

Not less than 60 days prior to the date of the performance of any work other than an annual inspection or routine maintenance, a municipality shall provide notice of the following to the owner of property and the resident of the property on which the work will be performed: (a) a description of the deficiency which necessitates the work; (b) a description of the entire work to be performed; (c) an estimate of the length of time needed to complete the work; and (d) the proposed date for beginning of the work. The municipality shall proceed to perform the work at the end of the 60 day notice period.