Cook County Value

138 Erin Ct Lemont, IL 60439

4 bed / 2 bath, 2,691 sqft, built 1995, in Lemont. Assessor market value for 2026: $610,000.

Cook County account 22304140030000

Assessor market value
$610,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,691 sqft
$227 per sqft
Year built
1995
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 22.0% from $500,000 in 2025 to $610,000 in 2026.
  • Assessor market value per square footThe current public record shows about $227 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.

  • 430 S Kromray Rd Lemont, IL 60439
    2,695 sqft | $245/sqft | built 1996 | Similar size (2,695 vs 2,691 sqft); Similar age (1996 vs 1995); Similar lot size (10,500 vs 10,458 sqft)
    $660,010
  • 1463 Chestnut Crossing Lemont, IL 60439
    2,666 sqft | $259/sqft | built 1995 | Similar size (2,666 vs 2,691 sqft); Built same year (1995); Similar lot size (10,474 vs 10,458 sqft)
    $690,000
  • 1448 Chestnut Crossing Lemont, IL 60439
    2,692 sqft | $245/sqft | built 1996 | Similar size (2,692 vs 2,691 sqft); Similar age (1996 vs 1995); Similar lot size (10,560 vs 10,458 sqft)
    $660,000
  • 478 Carriage Ridge Ln Lemont, IL 60439
    2,716 sqft | $243/sqft | built 1996 | Similar size (2,716 vs 2,691 sqft); Similar age (1996 vs 1995); Similar lot size (10,480 vs 10,458 sqft)
    $660,000
  • 42 W Wend St Lemont, IL 60439
    2,662 sqft | $240/sqft | built 1996 | Similar size (2,662 vs 2,691 sqft); Similar age (1996 vs 1995); Similar lot size (10,458 vs 10,458 sqft)
    $640,000

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 (5 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 (5 years older); 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 22.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$610,000+$110,000+22.0%
2025$500,000$00.0%
2024$500,000$00.0%
2023$500,000+$109,940+28.2%
2022$390,060$00.0%
2021$390,060+$100.0%
2020$390,050——
6-year total+$219,950+56.4%