Cook County Value

680 Harasek St Lemont, IL 60439

3 bed / 1 bath, 1,438 sqft, built 1987, in Lemont. Assessor market value for 2026: $440,000.

Cook County account 22281080060000

Assessor market value
$440,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,438 sqft
$306 per sqft
Year built
1987
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 25.7% from $350,000 in 2025 to $440,000 in 2026.
  • Assessor market value per square footThe current public record shows about $306 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.

  • 701 Kruk St Lemont, IL 60439
    1,427 sqft | $315/sqft | built 1987 | Similar size (1,427 vs 1,438 sqft); Built same year (1987); Similar lot size (9,450 vs 9,240 sqft)
    $450,000
  • 690 Harasek St Lemont, IL 60439
    1,438 sqft | $334/sqft | built 1989 | Similar size (1,438 vs 1,438 sqft); Similar age (1989 vs 1987); Similar lot size (9,310 vs 9,240 sqft)
    $480,000
  • 680 Tomaszewski St Lemont, IL 60439
    1,448 sqft | $331/sqft | built 1988 | Similar size (1,448 vs 1,438 sqft); Similar age (1988 vs 1987); Similar lot size (9,170 vs 9,240 sqft)
    $480,000
  • 731 Tomaszewski St Lemont, IL 60439
    1,436 sqft | $320/sqft | built 1989 | Similar size (1,436 vs 1,438 sqft); Similar age (1989 vs 1987); Similar lot size (9,310 vs 9,240 sqft)
    $460,000
  • 67 W Peiffer St Lemont, IL 60439
    1,436 sqft | $306/sqft | built 1986 | Similar size (1,436 vs 1,438 sqft); Similar age (1986 vs 1987); Similar lot size (9,660 vs 9,240 sqft)
    $440,010

Recent comparable sales

No usable comparable sales are available in this data snapshot.

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 25.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$440,000+$90,000+25.7%
2025$350,000$00.0%
2024$350,000$00.0%
2023$350,000+$40,590+13.1%
2022$309,410$00.0%
2021$309,410$00.0%
2020$309,410——
6-year total+$130,590+42.2%