Cook County Value

16 E Illinois St Lemont, IL 60439

6 bed / 3 bath, 2,832 sqft, built 1879, in Lemont. Assessor market value for 2026: $450,000.

Cook County account 22203130070000

Assessor market value
$450,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,832 sqft
$159 per sqft
Year built
1879
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 12.5% from $400,000 in 2025 to $450,000 in 2026.
  • Assessor market value per square footThe current public record shows about $159 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 1,277 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 +25.5% on average.

Comparable assessments

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

  • 610 Porter St Lemont, IL 60439
    2,852 sqft | $165/sqft | built 1871 | Similar size (2,852 vs 2,832 sqft); Lot 20% smaller (4,650 vs 5,808 sqft); Same quality (Average)
    $470,000
  • 317 Freehauf St Lemont, IL 60439
    2,578 sqft | $155/sqft | built 1891 | 9% smaller (2,578 vs 2,832 sqft); Lot 15% larger (6,708 vs 5,808 sqft); Same quality (Average)
    $400,010
  • 302 Main St Lemont, IL 60439
    2,590 sqft | $158/sqft | built 1889 | 8% smaller (2,590 vs 2,832 sqft); Lot 12% larger (6,492 vs 5,808 sqft); Same quality (Average)
    $410,010
  • 615 Singer Ave Lemont, IL 60439
    2,375 sqft | $194/sqft | built 1887 | Similar lot size (5,994 vs 5,808 sqft); Same quality (Average); Same neighborhood
    $460,000
  • 509 Singer Ave Lemont, IL 60439
    2,508 sqft | $203/sqft | built 1886 | 11% smaller (2,508 vs 2,832 sqft); Lot 15% larger (6,664 vs 5,808 sqft); Same quality (Average)
    $510,000

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 12.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$450,000+$50,000+12.5%
2025$400,000$00.0%
2024$400,000$00.0%
2023$400,000+$146,170+57.6%
2022$253,830$00.0%
2021$253,830$00.0%
2020$253,830——
6-year total+$196,170+77.3%