If you own a small apartment building in Lemont Township, the Cook County Assessor’s 2026 reassessment may be worth a second look—and a free appeal.
According to Lemont: Residential Valuations, the Assessor’s median estimated market value for small apartment buildings is $438,000—roughly 8% above the 2025 median sale price of $406,000. That gap is the kind of discrepancy that can make filing an appeal worthwhile. These estimated values will show up on property tax bills in 2027.
The picture looks different depending on what you own. Single-family homes came in almost perfectly matched—$595,000 estimated versus $598,000 in actual 2025 sales. Condo owners were actually estimated below market: $248,000 against a $295,000 median sale price…