Cook County Value

1183 128th St Lemont, IL 60439

3 bed / 3 bath, 3,143 sqft, built 2015, in Lemont. Assessor market value for 2026: $856,660.

Cook County account 22331160100000

Assessor market value
$856,660
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,143 sqft
$273 per sqft
Year built
2015
Average quality

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 increased 30.7% from $655,240 in 2025 to $856,660 in 2026.
  • Assessor market value per square footThe current public record shows about $273 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 2,806 residential records in the same neighborhood, the average assessor market value is about $255 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +30.4% on average.

Comparable assessments

Similar public appraisal records selected for this property's equity comparison.

  • 13641 Buchanan Dr Lemont, IL 60439
    3,125 sqft | $253/sqft | built 2014 | Similar size (3,125 vs 3,143 sqft); Similar age (2014 vs 2015); Similar lot size (11,882 vs 11,883 sqft)
    $790,000
  • 13432 Adeline Ct Lemont, IL 60439
    3,158 sqft | $272/sqft | built 2016 | Similar size (3,158 vs 3,143 sqft); Similar age (2016 vs 2015); Similar lot size (11,473 vs 11,883 sqft)
    $860,000
  • 13360 Bond Cir Lemont, IL 60439
    3,153 sqft | $244/sqft | built 2016 | Similar size (3,153 vs 3,143 sqft); Similar age (2016 vs 2015); Similar lot size (11,162 vs 11,883 sqft)
    $770,000
  • 13413 Adeline Ct Lemont, IL 60439
    3,107 sqft | $267/sqft | built 2016 | Similar size (3,107 vs 3,143 sqft); Similar age (2016 vs 2015); Similar lot size (12,218 vs 11,883 sqft)
    $830,000
  • 13750 Buchanan Dr Lemont, IL 60439
    3,150 sqft | $260/sqft | built 2016 | Similar size (3,150 vs 3,143 sqft); Similar age (2016 vs 2015); Similar lot size (12,411 vs 11,883 sqft)
    $820,010

Recent comparable sales

Sales selected by similarity to the subject property.

  • 12655 Derry Dr Lemont, IL 60439
    June-29-2026 | 2,672 sqft | $266/sqft | built 2025 | 15% size difference (2,672 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $710,150
  • 12554 Eileen St Lemont, IL 60439
    June-29-2026 | 3,421 sqft | $272/sqft | built 2025 | 9% size difference (3,421 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $930,895
  • 1217 Woburn Dr Lemont, IL 60439
    2,576 sqft | $318/sqft | built 2016 | Similar age (2016); Within 1 bedroom (4 vs 3)
    $819,000

Public appraisal comparison for 2026. Prepared . Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 30.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$856,660+$201,420+30.7%
2025$655,240$00.0%
2024$655,240−$44,760−6.4%
2023$700,000+$278,400+66.0%
2022$421,600−$53,330−11.2%
2021$474,930+$100.0%
2020$474,920——
6-year total+$381,740+80.4%