Cook County Value

1266 Acorn St Lemont, IL 60439

5 bed / 3 bath, 4,014 sqft, built 1994, in Lemont. Assessor market value for 2026: $810,000.

Cook County account 22321140210000

Assessor market value
$810,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,014 sqft
$202 per sqft
Year built
1994
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 40.3% from $577,160 in 2025 to $810,000 in 2026.
  • Assessor market value per square footThe current public record shows about $202 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.

  • 13048 Rolling Meadows Dr Lemont, IL 60439
    3,994 sqft | $215/sqft | built 2006 | Similar size (3,994 vs 4,014 sqft); Similar lot size (11,409 vs 11,676 sqft); Same quality (Average)
    $860,000
  • 1026 Walter St Lemont, IL 60439
    3,884 sqft | $250/sqft | built 2001 | Similar size (3,884 vs 4,014 sqft); Similar lot size (11,685 vs 11,676 sqft); Same quality (Average)
    $972,000
  • 12955 Sunrise Dr Lemont, IL 60439
    3,969 sqft | $197/sqft | built 1998 | Similar size (3,969 vs 4,014 sqft); Similar age (1998 vs 1994); Lot 11% smaller (10,400 vs 11,676 sqft)
    $780,000
  • 13069 Blue Grass Dr Lemont, IL 60439
    4,137 sqft | $205/sqft | built 2001 | Similar size (4,137 vs 4,014 sqft); Similar lot size (11,050 vs 11,676 sqft); Same quality (Average)
    $850,000
  • 16492 Christopher Dr Lemont, IL 60439
    4,044 sqft | $225/sqft | built 2004 | Similar size (4,044 vs 4,014 sqft); Similar lot size (12,439 vs 11,676 sqft); Same quality (Average)
    $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: . 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 40.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$810,000+$232,840+40.3%
2025$577,160$00.0%
2024$577,160$00.0%
2023$577,160+$102,190+21.5%
2022$474,970−$42,470−8.2%
2021$517,440+$200.0%
2020$517,420——
6-year total+$292,580+56.5%