Cook County Value

14151 131st St Lemont, IL 60439

4 bed / 3 bath, 3,820 sqft, built 2018, in Lemont Assessor market value for 2026: $1,421,140.

Cook County account 22341120020000

Likely too high

about $470,000

8 similar homes nearby point to a value about $470,000 lower than yours.

Assessor market value$1,421,140
Similar homes$951,294
$469,846 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$1,421,140
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,820 sqft
$372 per sqft
Year built
2018
Average quality

Why we think so

Similar homes' assessments

Strong

8 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $249.03/sqft, which supports a value of $951,294.

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 $764,420 in 2025 to $1,421,140 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 $372 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

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 14291 131st St Lemont, IL 60439
    3,820 sqft | $322/sqft | built 2014 | Similar size (3,820 vs 3,820 sqft); Similar age (2014 vs 2018); Similar lot size (13,500 vs 13,500 sqft)
    $1,230,010
  • 13620 Kettering Pky Lemont, IL 60439
    3,855 sqft | $249/sqft | built 2017 | Similar size (3,855 vs 3,820 sqft); Similar age (2017 vs 2018); Similar lot size (14,180 vs 13,500 sqft)
    $960,010
  • 13107 Kettering Way Lemont, IL 60439
    3,776 sqft | $244/sqft | built 2017 | Similar size (3,776 vs 3,820 sqft); Similar age (2017 vs 2018); Similar lot size (12,769 vs 13,500 sqft)
    $920,000
  • 16531 Willow Dr Lemont, IL 60439
    3,838 sqft | $268/sqft | built 2018 | Similar size (3,838 vs 3,820 sqft); Built same year (2018); Similar lot size (12,852 vs 13,500 sqft)
    $1,030,000
  • 13760 Kettering Pky Lemont, IL 60439
    3,769 sqft | $241/sqft | built 2021 | Similar size (3,769 vs 3,820 sqft); Similar age (2021 vs 2018); Similar lot size (12,994 vs 13,500 sqft)
    $910,000

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: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 85.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,421,140+$656,720+85.9%
2025$764,420+$81,130+11.9%
2024$683,290−$88,240−11.4%
2023$771,530+$305,390+65.5%
2022$466,140−$73,360−13.6%
2021$539,500−$151,690−21.9%
2020$691,190——
6-year total+$729,950+105.6%