4 bed / 2 bath, 2,997 sqft, built 1990, in Lemont. Assessor market value for 2026: $810,000.
Cook County account 22243020150000
Assessor market value
$810,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,997 sqft
$270 per sqft
Year built
1990
Compare this assessment
Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.
For nearby context, browse ZIP 60439 and Lemont assessment pages.
For Lemont, appeals to the Assessor closed . Board of Review dates for Lemont have not been published yet.
Deadline rule: Set by township: file with the Assessor by your township's last file date, and with the Board of Review while your township is open there. Evidence is reviewed by the Cook County Assessor's Office or, in a separate appeal, by the Cook County Board of Review. Dates checked against the official source.
Assessment snapshot
These public CCAO records highlight what may be worth checking before you file.
Assessment changeThe assessor market value changed from $489,190 in 2025 to $810,000 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
Assessor market value per square footThe current public record shows about $270 per square foot before any comparable-property adjustments.
Nearby comparison areaThis page starts the equity review with public records for the Lemont neighborhood and ZIP 60439.
Neighborhood value signalAmong 321 residential records in the same neighborhood, the average assessor market value is about $244 per square foot.
Area year-over-year signalNearby residential records with prior-year values moved about +52.5% on average.
Comparable assessments
Similar public appraisal records selected for this property's equity comparison.
2,722 sqft | $253/sqft | built 1990 | 9% size difference (2,722 sqft); Similar age (1990); Same beds (4)
$690,000
Public appraisal comparison for 2026. Prepared . Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.
Value history
Up 65.6% in 2026 from 2025.
Assessor market value by tax year, with the change from the previous year listed