Cook County Value

1 Longwood Way Lemont, IL 60439

4 bed / 2 bath, 2,888 sqft, built 1991, in Lemont. Assessor market value for 2026: $710,000.

Cook County account 22313030120000

Assessor market value
$710,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,888 sqft
$246 per sqft
Year built
1991
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 27.8% from $555,500 in 2025 to $710,000 in 2026.
  • Assessor market value per square footThe current public record shows about $246 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.

  • 8 Longwood Way Lemont, IL 60439
    2,858 sqft | $294/sqft | built 1989 | Similar size (2,858 vs 2,888 sqft); Similar age (1989 vs 1991); Similar lot size (47,828 vs 45,738 sqft)
    $841,000
  • 12500 Archer Ave Lemont, IL 60439
    2,910 sqft | $227/sqft | built 1988 | Similar size (2,910 vs 2,888 sqft); Similar age (1988 vs 1991); Similar lot size (43,560 vs 45,738 sqft)
    $660,000
  • 31 Valley View Dr Lemont, IL 60439
    2,889 sqft | $246/sqft | built 1990 | Similar size (2,889 vs 2,888 sqft); Similar age (1990 vs 1991); Similar lot size (41,991 vs 45,738 sqft)
    $710,000
  • 15 Valley View Dr Lemont, IL 60439
    2,889 sqft | $256/sqft | built 1990 | Similar size (2,889 vs 2,888 sqft); Similar age (1990 vs 1991); Similar lot size (50,224 vs 45,738 sqft)
    $740,000
  • 1308 Leinster Dr Lemont, IL 60439
    2,908 sqft | $251/sqft | built 1987 | Similar size (2,908 vs 2,888 sqft); Similar age (1987 vs 1991); Lot 10% smaller (40,946 vs 45,738 sqft)
    $730,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 1238 Acorn St Lemont, IL 60439
    2,802 sqft | $223/sqft | built 1990 | Similar size (2,802 sqft); Similar age (1990); Within 1 bedroom (3 vs 4)
    $625,000
  • 11 Cedar Ct Lemont, IL 60439
    2,722 sqft | $253/sqft | built 1990 | 6% size difference (2,722 sqft); Similar age (1990); Same beds (4)
    $690,000
  • 1373 Gordon Ln Lemont, IL 60439
    2,834 sqft | $106/sqft | built 1985 | Similar size (2,834 sqft); Moderate age difference (6 years older); Same beds (4)
    $300,000

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 27.8% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$710,000+$154,500+27.8%
2025$555,500−$11,800−2.1%
2024$567,300$00.0%
2023$567,300+$179,440+46.3%
2022$387,860−$36,420−8.6%
2021$424,280+$100.0%
2020$424,270——
6-year total+$285,730+67.3%