Cook County Value

41 Brookside Dr Lemont, IL 60439

3 bed / 2 bath, 4,723 sqft, built 2008, in Lemont Assessor market value for 2026: $1,150,000.

Cook County account 22242050020000

Assessor market value
$1,150,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,723 sqft
$243 per sqft
Year built
2008
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 changed from $665,030 in 2025 to $1,150,000 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
  • Assessor market value per square footThe current public record shows about $243 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 321 residential records in the same neighborhood, the average assessor market value is about $244 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +52.5% on average.

Comparable assessments

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

  • 55 Woodview Ln Lemont, IL 60439
    4,715 sqft | $259/sqft | built 2000 | Similar size (4,715 vs 4,723 sqft); Similar lot size (40,502 vs 40,554 sqft); Same quality (Average)
    $1,221,000
  • 2 Timberview Lemont, IL 60439
    4,987 sqft | $203/sqft | built 1999 | 6% larger (4,987 vs 4,723 sqft); Similar lot size (41,033 vs 40,554 sqft); Same quality (Average)
    $1,010,000
  • 10 Horseshoe Ln Lemont, IL 60439
    4,570 sqft | $206/sqft | built 2003 | Similar size (4,570 vs 4,723 sqft); Similar age (2003 vs 2008); Similar lot size (44,169 vs 40,554 sqft)
    $940,000
  • 8 Clear View Lemont, IL 60439
    4,914 sqft | $201/sqft | built 1998 | Similar size (4,914 vs 4,723 sqft); Similar lot size (41,861 vs 40,554 sqft); Same quality (Average)
    $990,000
  • 51 Stone Creek Dr Lemont, IL 60439
    4,877 sqft | $211/sqft | built 1994 | Similar size (4,877 vs 4,723 sqft); Similar lot size (43,908 vs 40,554 sqft); Same quality (Average)
    $1,030,010

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: . 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 72.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,150,000+$484,970+72.9%
2025$665,030−$40,140−5.7%
2024$705,170−$44,830−6.0%
2023$750,000+$119,420+18.9%
2022$630,580−$55,260−8.1%
2021$685,840−$43,470−6.0%
2020$729,310——
6-year total+$420,690+57.7%