Cook County Value

6 Longwood Way Lemont, IL 60439

4 bed / 2 bath, 2,741 sqft, built 1988, in Lemont. Assessor market value for 2026: $690,000.

Cook County account 22313040090000

Assessor market value
$690,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,741 sqft
$252 per sqft
Year built
1988
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 39.7% from $493,890 in 2025 to $690,000 in 2026.
  • Assessor market value per square footThe current public record shows about $252 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.

  • 1206 Leinster Dr Lemont, IL 60439
    2,738 sqft | $234/sqft | built 1986 | Similar size (2,738 vs 2,741 sqft); Similar age (1986 vs 1988); Lot 15% smaller (30,174 vs 35,327 sqft)
    $640,000
  • 1206 Emerald Dr Lemont, IL 60439
    2,736 sqft | $241/sqft | built 1984 | Similar size (2,736 vs 2,741 sqft); Similar age (1984 vs 1988); Lot 13% larger (40,031 vs 35,327 sqft)
    $660,000
  • 13305 Baltic Cir Lemont, IL 60439
    2,719 sqft | $257/sqft | built 1988 | Similar size (2,719 vs 2,741 sqft); Built same year (1988); Lot 17% larger (41,164 vs 35,327 sqft)
    $700,000
  • 13195 Da Vinci Lemont, IL 60439
    2,748 sqft | $284/sqft | built 1995 | Similar size (2,748 vs 2,741 sqft); Lot 16% larger (40,815 vs 35,327 sqft); Same quality (Average)
    $780,000
  • 15121 Turnberry Trl Lemont, IL 60439
    2,738 sqft | $267/sqft | built 1995 | Similar size (2,738 vs 2,741 sqft); Lot 17% larger (41,252 vs 35,327 sqft); Same quality (Average)
    $730,000

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 39.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$690,000+$196,110+39.7%
2025$493,890$00.0%
2024$493,890$00.0%
2023$493,890+$93,290+23.3%
2022$400,600$00.0%
2021$400,600+$100.0%
2020$400,590——
6-year total+$289,410+72.2%