70 ILCS 2805/52

Determination of benefit to private property owners by assessing officer. In determining the benefit to be received by private property owners as a result of a proposed improvement, the assessing officer, in his or her discretion, may take into account any one or more of the following elements and assign a weight to each: front footage, lot area, lot depth, assessed valuation, number of buildable sites, zoning, highest and best use, acreage, health benefits or a mandate from any governmental agency or a certification from the district's engineer as to the need to construct or install the proposed improvement in order to comply with any existing applicable legislation.