Cook County Value

1122 Florence St Lemont, IL 60439

3 bed / 2 bath, 2,800 sqft, built 1989, in Lemont. Assessor market value for 2026: $590,000.

Cook County account 22293200020000

Assessor market value
$590,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,800 sqft
$211 per sqft
Year built
1989
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 27.7% from $462,190 in 2025 to $590,000 in 2026.
  • Assessor market value per square footThe current public record shows about $211 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 437 residential records in the same neighborhood, the average assessor market value is about $261 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +25.7% on average.

Comparable assessments

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

  • 1140 Florence St Lemont, IL 60439
    2,732 sqft | $209/sqft | built 1989 | Similar size (2,732 vs 2,800 sqft); Built same year (1989); Similar lot size (10,132 vs 9,935 sqft)
    $570,010
  • 10 Wend St Lemont, IL 60439
    2,744 sqft | $204/sqft | built 1989 | Similar size (2,744 vs 2,800 sqft); Built same year (1989); Similar lot size (9,975 vs 9,935 sqft)
    $560,000
  • 621 Kruk St Lemont, IL 60439
    2,779 sqft | $212/sqft | built 1987 | Similar size (2,779 vs 2,800 sqft); Similar age (1987 vs 1989); Lot 11% larger (11,027 vs 9,935 sqft)
    $590,000
  • 771 Harasek St Lemont, IL 60439
    2,749 sqft | $207/sqft | built 1989 | Similar size (2,749 vs 2,800 sqft); Built same year (1989); Similar lot size (9,192 vs 9,935 sqft)
    $570,000
  • 9 Aspen Ct Lemont, IL 60439
    2,602 sqft | $215/sqft | built 1989 | 7% smaller (2,602 vs 2,800 sqft); Built same year (1989); Similar lot size (9,308 vs 9,935 sqft)
    $560,010

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 27.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$590,000+$127,810+27.7%
2025$462,190−$17,810−3.7%
2024$480,000$00.0%
2023$480,000+$152,510+46.6%
2022$327,490$00.0%
2021$327,490+$200.0%
2020$327,470——
6-year total+$262,530+80.2%