Cook County Value

4 Chestnut Lemont, IL 60439

4 bed / 3 bath, 4,354 sqft, built 1995, in Lemont. Assessor market value for 2026: $1,070,000.

Cook County account 22251040040000

Assessor market value
$1,070,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,354 sqft
$246 per sqft
Year built
1995

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.

Local guide: Lemont Township 2026 Property Tax Appeal Guide.

Appeal deadlines

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 $644,440 in 2025 to $1,070,000 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 $246 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.

  • 1 Clear View Lemont, IL 60439
    4,326 sqft | $220/sqft | built 1987 | Similar size (4,326 vs 4,354 sqft); Similar lot size (52,446 vs 51,457 sqft); Same neighborhood
    $950,000
  • 7 Paddock Lemont, IL 60439
    4,660 sqft | $210/sqft | built 1989 | 7% larger (4,660 vs 4,354 sqft); Similar lot size (50,747 vs 51,457 sqft); Same bed/bath (4/3)
    $980,000
  • 3 North Trl Lemont, IL 60439
    4,633 sqft | $267/sqft | built 1993 | 6% larger (4,633 vs 4,354 sqft); Similar age (1993 vs 1995); Similar lot size (48,787 vs 51,457 sqft)
    $1,238,080
  • 60 Brookside Dr Lemont, IL 60439
    4,362 sqft | $225/sqft | built 1989 | Similar size (4,362 vs 4,354 sqft); Lot 13% smaller (44,980 vs 51,457 sqft); Same neighborhood
    $980,010
  • 27 115th St Lemont, IL 60439
    4,058 sqft | $275/sqft | built 1990 | 7% smaller (4,058 vs 4,354 sqft); Similar age (1990 vs 1995); Similar lot size (48,085 vs 51,457 sqft)
    $1,117,100

Recent comparable sales

Sales selected by similarity to the subject property.

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 66.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,070,000+$425,560+66.0%
2025$644,440$00.0%
2024$644,440−$69,400−9.7%
2023$713,840+$82,940+13.1%
2022$630,900−$48,240−7.1%
2021$679,140+$100.0%
2020$679,130——
6-year total+$390,870+57.6%