Cook County Value

1227 Acorn St Lemont, IL 60439

4 bed / 3 bath, 3,800 sqft, built 1993, in Lemont. Assessor market value for 2026: $830,000.

Cook County account 22321090140000

Possibly too high

about $13,000

8 similar homes nearby point to a value about $13,000 lower than yours.

Assessor market value$830,000
Similar homes$816,734
$13,266 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$830,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,800 sqft
$218 per sqft
Year built
1993
Average quality

Why we think so

Similar homes' assessments

Moderate

4 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $212.37/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $113,440. Counting your land in place of theirs where theirs is less, they support a value of $816,734.

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 31.7% from $630,000 in 2025 to $830,000 in 2026.
  • Assessor market value per square footThe current public record shows about $218 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.

  • 1221 Camelot Ln Lemont, IL 60439
    3,701 sqft | $208/sqft | built 1996 | Similar size (3,701 vs 3,800 sqft); Similar age (1996 vs 1993); Similar lot size (14,537 vs 14,637 sqft)
    $770,000
  • 1234 Abbey Oaks Dr Lemont, IL 60439
    3,759 sqft | $202/sqft | built 1996 | Similar size (3,759 vs 3,800 sqft); Similar age (1996 vs 1993); Similar lot size (13,970 vs 14,637 sqft)
    $760,000
  • 13091 Klappa Dr Lemont, IL 60439
    3,778 sqft | $228/sqft | built 2004 | Similar size (3,778 vs 3,800 sqft); Similar lot size (14,901 vs 14,637 sqft); Same quality (Average)
    $860,000
  • 16515 Christopher Dr Lemont, IL 60439
    3,793 sqft | $229/sqft | built 2001 | Similar size (3,793 vs 3,800 sqft); Similar lot size (13,657 vs 14,637 sqft); Same quality (Average)
    $870,000
  • 1200 Pleasant Pl Lemont, IL 60439
    3,845 sqft | $203/sqft | built 1997 | Similar size (3,845 vs 3,800 sqft); Similar age (1997 vs 1993); Lot 10% smaller (13,122 vs 14,637 sqft)
    $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 31.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$830,000+$200,000+31.7%
2025$630,000$00.0%
2024$630,000$00.0%
2023$630,000+$163,180+35.0%
2022$466,820$00.0%
2021$466,820$00.0%
2020$466,820——
6-year total+$363,180+77.8%