Cook County Value

502 Senon Dr Lemont, IL 60439

4 bed / 2 bath, 2,814 sqft, built 1997, in Lemont. Assessor market value for 2026: $720,000.

Cook County account 22213110050000

Assessor market value
$720,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,814 sqft
$256 per sqft
Year built
1997
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 38.8% from $518,740 in 2025 to $720,000 in 2026.
  • Assessor market value per square footThe current public record shows about $256 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.

  • 1208 Camelot Ln Lemont, IL 60439
    2,820 sqft | $234/sqft | built 1997 | Similar size (2,820 vs 2,814 sqft); Built same year (1997); Similar lot size (9,910 vs 9,975 sqft)
    $660,000
  • 1212 Camelot Ln Lemont, IL 60439
    2,816 sqft | $234/sqft | built 1997 | Similar size (2,816 vs 2,814 sqft); Built same year (1997); Similar lot size (10,458 vs 9,975 sqft)
    $660,000
  • 15146 129th St Lemont, IL 60439
    2,840 sqft | $243/sqft | built 1996 | Similar size (2,840 vs 2,814 sqft); Similar age (1996 vs 1997); Similar lot size (10,320 vs 9,975 sqft)
    $690,000
  • 641 Woodcrest Ln Lemont, IL 60439
    2,784 sqft | $237/sqft | built 1999 | Similar size (2,784 vs 2,814 sqft); Similar age (1999 vs 1997); Similar lot size (9,508 vs 9,975 sqft)
    $660,000
  • 66 Deborah Dr Lemont, IL 60439
    2,806 sqft | $242/sqft | built 1994 | Similar size (2,806 vs 2,814 sqft); Similar age (1994 vs 1997); Similar lot size (9,840 vs 9,975 sqft)
    $680,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 1238 Acorn St Lemont, IL 60439
    2,802 sqft | $223/sqft | built 1990 | Similar size (2,802 sqft); Moderate age difference (7 years older); Within 1 bedroom (3 vs 4)
    $625,000
  • 11 Cedar Ct Lemont, IL 60439
    2,722 sqft | $253/sqft | built 1990 | Similar size (2,722 sqft); Moderate age difference (7 years older); Same beds (4)
    $690,000
  • 1217 Woburn Dr Lemont, IL 60439
    2,576 sqft | $318/sqft | built 2016 | 8% size difference (2,576 sqft); Same beds (4)
    $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 38.8% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$720,000+$201,260+38.8%
2025$518,740$00.0%
2024$518,740−$52,370−9.2%
2023$571,110+$190,420+50.0%
2022$380,690−$5,920−1.5%
2021$386,610−$21,360−5.2%
2020$407,970——
6-year total+$312,030+76.5%