Cook County Value

21 Emily Ln Lemont, IL 60439

4 bed / 2 bath, 3,719 sqft, built 2001, in Lemont. Assessor market value for 2026: $780,000.

Cook County account 22323040070000

Assessor market value
$780,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,719 sqft
$210 per sqft
Year built
2001
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 23.8% from $629,830 in 2025 to $780,000 in 2026.
  • Assessor market value per square footThe current public record shows about $210 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.

  • 25 Longwood Way Lemont, IL 60439
    3,715 sqft | $253/sqft | built 1997 | Similar size (3,715 vs 3,719 sqft); Similar age (1997 vs 2001); Lot 18% smaller (50,486 vs 61,610 sqft)
    $940,000
  • 10 Valley View Dr Lemont, IL 60439
    3,675 sqft | $212/sqft | built 1992 | Similar size (3,675 vs 3,719 sqft); Lot 16% smaller (51,836 vs 61,610 sqft); Same quality (Average)
    $780,000
  • 13527 Oak Ct Lemont, IL 60439
    3,701 sqft | $238/sqft | built 1987 | Similar size (3,701 vs 3,719 sqft); Lot 11% smaller (54,667 vs 61,610 sqft); Same quality (Average)
    $880,000
  • 13870 Kit Ln Lemont, IL 60439
    3,673 sqft | $253/sqft | built 2008 | Similar size (3,673 vs 3,719 sqft); Same quality (Average); Same bed/bath (4/2)
    $930,010
  • 13110 Fox Hill Dr Lemont, IL 60439
    3,741 sqft | $208/sqft | built 1994 | Similar size (3,741 vs 3,719 sqft); Same quality (Average); Same bed/bath (4/2)
    $780,000

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 23.8% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$780,000+$150,170+23.8%
2025$629,830$00.0%
2024$629,830−$85,640−12.0%
2023$715,470+$194,900+37.4%
2022$520,570$00.0%
2021$520,570+$100.0%
2020$520,560——
6-year total+$259,440+49.8%