Cook County Value

509 Keepataw Dr Lemont, IL 60439

4 bed / 2 bath, 2,463 sqft, built 1989, in Lemont. Assessor market value for 2026: $520,000.

Cook County account 22294140190000

Assessor market value
$520,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,463 sqft
$211 per sqft
Year built
1989
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 26.2% from $412,190 in 2025 to $520,000 in 2026.
  • Assessor market value per square footThe current public record shows about $211 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 858 residential records in the same neighborhood, the average assessor market value is about $264 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +21.4% on average.

Comparable assessments

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

  • 528 Keepataw Dr Lemont, IL 60439
    2,453 sqft | $208/sqft | built 1985 | Similar size (2,453 vs 2,463 sqft); Similar age (1985 vs 1989); Similar lot size (9,247 vs 9,000 sqft)
    $510,000
  • 521 6th St Lemont, IL 60439
    2,309 sqft | $208/sqft | built 1987 | 6% smaller (2,309 vs 2,463 sqft); Similar age (1987 vs 1989); Similar lot size (9,056 vs 9,000 sqft)
    $480,000
  • 1126 Glenys Dr Lemont, IL 60439
    2,328 sqft | $228/sqft | built 1988 | 6% smaller (2,328 vs 2,463 sqft); Similar age (1988 vs 1989); Similar lot size (8,750 vs 9,000 sqft)
    $530,000
  • 1128 Glenys Dr Lemont, IL 60439
    2,328 sqft | $228/sqft | built 1990 | 6% smaller (2,328 vs 2,463 sqft); Similar age (1990 vs 1989); Similar lot size (8,750 vs 9,000 sqft)
    $530,000
  • 417 Freehauf St Lemont, IL 60439
    2,448 sqft | $200/sqft | built 1977 | Similar size (2,448 vs 2,463 sqft); Similar lot size (8,559 vs 9,000 sqft); Same quality (Average)
    $490,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 1238 Acorn St Lemont, IL 60439
    2,802 sqft | $223/sqft | built 1990 | 14% size difference (2,802 sqft); Similar age (1990); Within 1 bedroom (3 vs 4)
    $625,000
  • 11 Cedar Ct Lemont, IL 60439
    2,722 sqft | $253/sqft | built 1990 | 10% 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 26.2% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$520,000+$107,810+26.2%
2025$412,190−$27,810−6.3%
2024$440,000$00.0%
2023$440,000+$122,510+38.6%
2022$317,490$00.0%
2021$317,490$00.0%
2020$317,490——
6-year total+$202,510+63.8%