Cook County Value

424 Grant St Lemont, IL 60439

3 bed / 1 bath, 1,105 sqft, built 1883, in Lemont. Assessor market value for 2026: $280,000.

Cook County account 22204370180000

Assessor market value
$280,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,105 sqft
$253 per sqft
Year built
1883
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 27.3% from $220,000 in 2025 to $280,000 in 2026.
  • Assessor market value per square footThe current public record shows about $253 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 1,277 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 +25.5% on average.

Comparable assessments

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

  • 16074 W New Ave Lemont, IL 60439
    1,109 sqft | $151/sqft | built 1887 | Similar size (1,109 vs 1,105 sqft); Similar age (1887 vs 1883); Similar lot size (9,200 vs 10,000 sqft)
    $167,450
  • 207 E Custer St Lemont, IL 60439
    1,200 sqft | $225/sqft | built 1886 | 9% larger (1,200 vs 1,105 sqft); Similar age (1886 vs 1883); Similar lot size (9,585 vs 10,000 sqft)
    $270,000
  • 717 Warner Ave Lemont, IL 60439
    1,116 sqft | $251/sqft | built 1878 | Similar size (1,116 vs 1,105 sqft); Similar age (1878 vs 1883); Lot 19% smaller (8,122 vs 10,000 sqft)
    $280,000
  • 727 State St Lemont, IL 60439
    1,028 sqft | $224/sqft | built 1872 | 7% smaller (1,028 vs 1,105 sqft); Similar lot size (9,836 vs 10,000 sqft); Same quality (Average)
    $230,010
  • 824 Singer Ave Lemont, IL 60439
    1,020 sqft | $353/sqft | built 1885 | 8% smaller (1,020 vs 1,105 sqft); Similar age (1885 vs 1883); Lot 15% smaller (8,520 vs 10,000 sqft)
    $360,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 16004 New Ave Lemont, IL 60439
    1,037 sqft | $241/sqft | built 1893 | 6% size difference (1,037 sqft); Moderate age difference (10 years newer); Same beds (3)
    $250,000

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 27.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$280,000+$60,000+27.3%
2025$220,000$00.0%
2024$220,000$00.0%
2023$220,000+$71,670+48.3%
2022$148,330$00.0%
2021$148,330+$100.0%
2020$148,320——
6-year total+$131,680+88.8%