Cook County Value

400 Stephen St Lemont, IL 60439

2 bed / 1 bath, 1,188 sqft, built 1888, in Lemont. Assessor market value for 2026: $230,010.

Cook County account 22204400370000

Assessor market value
$230,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,188 sqft
$194 per sqft
Year built
1888
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 9.5% from $210,010 in 2025 to $230,010 in 2026.
  • Assessor market value per square footThe current public record shows about $194 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.

  • 4 E Illinois St Lemont, IL 60439
    1,172 sqft | $256/sqft | built 1891 | Similar size (1,172 vs 1,188 sqft); Similar age (1891 vs 1888); Similar lot size (5,808 vs 5,676 sqft)
    $300,000
  • 606 Porter St Lemont, IL 60439
    1,212 sqft | $272/sqft | built 1889 | Similar size (1,212 vs 1,188 sqft); Similar age (1889 vs 1888); Similar lot size (6,200 vs 5,676 sqft)
    $330,000
  • 606 McCarthy Rd Lemont, IL 60439
    1,222 sqft | $262/sqft | built 1888 | Similar size (1,222 vs 1,188 sqft); Built same year (1888); Similar lot size (6,210 vs 5,676 sqft)
    $320,000
  • 714 Walnut St Lemont, IL 60439
    1,267 sqft | $284/sqft | built 1892 | 7% larger (1,267 vs 1,188 sqft); Similar age (1892 vs 1888); Similar lot size (5,720 vs 5,676 sqft)
    $360,000
  • 15918 New Ave Lemont, IL 60439
    1,190 sqft | $210/sqft | built 1899 | Similar size (1,190 vs 1,188 sqft); Similar lot size (6,000 vs 5,676 sqft); Same quality (Average)
    $250,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 16004 New Ave Lemont, IL 60439
    1,037 sqft | $241/sqft | built 1893 | 13% size difference (1,037 sqft); Moderate age difference (5 years newer); Within 1 bedroom (3 vs 2)
    $250,000

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 9.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$230,010+$20,000+9.5%
2025$210,010$00.0%
2024$210,010$00.0%
2023$210,010+$35,790+20.5%
2022$174,220$00.0%
2021$174,220+$200.0%
2020$174,200——
6-year total+$55,810+32.0%