Cook County Value

18 W Connaucht St A Lemont, IL 60439

4 bed / 2 bath, 3,297 sqft, built 1994, in Lemont. Assessor market value for 2026: $740,000.

Cook County account 22321030150000

Assessor market value
$740,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,297 sqft
$224 per sqft
Year built
1994
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 19.4% from $620,000 in 2025 to $740,000 in 2026.
  • Assessor market value per square footThe current public record shows about $224 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.

  • 96 Doolin St Lemont, IL 60439
    3,267 sqft | $217/sqft | built 1993 | Similar size (3,267 vs 3,297 sqft); Similar age (1993 vs 1994); Similar lot size (12,900 vs 12,728 sqft)
    $710,010
  • 385 Fourth St Lemont, IL 60439
    3,328 sqft | $243/sqft | built 1998 | Similar size (3,328 vs 3,297 sqft); Similar age (1998 vs 1994); Similar lot size (12,495 vs 12,728 sqft)
    $810,000
  • 110 Timberline Dr Lemont, IL 60439
    3,285 sqft | $216/sqft | built 1993 | Similar size (3,285 vs 3,297 sqft); Similar age (1993 vs 1994); Similar lot size (12,000 vs 12,728 sqft)
    $710,000
  • 15165 Turnberry Trl Lemont, IL 60439
    3,272 sqft | $232/sqft | built 1996 | Similar size (3,272 vs 3,297 sqft); Similar age (1996 vs 1994); Similar lot size (12,184 vs 12,728 sqft)
    $760,000
  • 1276 Camelot Ln Lemont, IL 60439
    3,318 sqft | $226/sqft | built 1998 | Similar size (3,318 vs 3,297 sqft); Similar age (1998 vs 1994); Similar lot size (13,320 vs 12,728 sqft)
    $750,000

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 19.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$740,000+$120,000+19.4%
2025$620,000$00.0%
2024$620,000$00.0%
2023$620,000+$165,800+36.5%
2022$454,200$00.0%
2021$454,200+$100.0%
2020$454,190——
6-year total+$285,810+62.9%