Cook County Value

402 Stephen St Lemont, IL 60439

3 bed / 1 bath, 1,155 sqft, built 1989, in Lemont. Assessor market value for 2026: $320,010.

Cook County account 22204400380000

Assessor market value
$320,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,155 sqft
$277 per sqft
Year built
1989
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 10.3% from $290,010 in 2025 to $320,010 in 2026.
  • Assessor market value per square footThe current public record shows about $277 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.

  • 912 Warner Ave Lemont, IL 60439
    1,179 sqft | $314/sqft | built 1985 | Similar size (1,179 vs 1,155 sqft); Similar age (1985 vs 1989); Similar lot size (7,250 vs 6,996 sqft)
    $370,000
  • 924 Warner Ave Lemont, IL 60439
    1,183 sqft | $355/sqft | built 1990 | Similar size (1,183 vs 1,155 sqft); Similar age (1990 vs 1989); Similar lot size (7,250 vs 6,996 sqft)
    $420,000
  • 725 Ledochowski St Lemont, IL 60439
    1,187 sqft | $278/sqft | built 1987 | Similar size (1,187 vs 1,155 sqft); Similar age (1987 vs 1989); Similar lot size (6,600 vs 6,996 sqft)
    $330,000
  • 720 East St Lemont, IL 60439
    1,187 sqft | $286/sqft | built 1987 | Similar size (1,187 vs 1,155 sqft); Similar age (1987 vs 1989); Lot 11% smaller (6,240 vs 6,996 sqft)
    $340,000
  • 722 Ledochowski St Lemont, IL 60439
    1,248 sqft | $288/sqft | built 1991 | 8% larger (1,248 vs 1,155 sqft); Similar age (1991 vs 1989); Similar lot size (6,750 vs 6,996 sqft)
    $360,000

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 10.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$320,010+$30,000+10.3%
2025$290,010$00.0%
2024$290,010$00.0%
2023$290,010+$51,280+21.5%
2022$238,730$00.0%
2021$238,730+$100.0%
2020$238,720——
6-year total+$81,290+34.1%