Cook County Value

801 Singer Ave Lemont, IL 60439

4 bed / 2 bath, 1,728 sqft, built 1890, in Lemont. Assessor market value for 2026: $410,010.

Cook County account 22291160010000

Assessor market value
$410,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,728 sqft
$237 per sqft
Year built
1890
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 17.1% from $350,010 in 2025 to $410,010 in 2026.
  • Assessor market value per square footThe current public record shows about $237 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.

  • 542 Czacki St Lemont, IL 60439
    1,672 sqft | $227/sqft | built 1891 | Similar size (1,672 vs 1,728 sqft); Similar age (1891 vs 1890); Similar lot size (6,600 vs 6,660 sqft)
    $380,000
  • 704 Ledochowski St Lemont, IL 60439
    1,720 sqft | $186/sqft | built 1883 | Similar size (1,720 vs 1,728 sqft); Similar lot size (6,750 vs 6,660 sqft); Same quality (Average)
    $320,000
  • 718 Hickory St Lemont, IL 60439
    1,768 sqft | $221/sqft | built 1883 | Similar size (1,768 vs 1,728 sqft); Similar lot size (6,240 vs 6,660 sqft); Same quality (Average)
    $390,000
  • 613 Singer Ave Lemont, IL 60439
    1,664 sqft | $228/sqft | built 1891 | Similar size (1,664 vs 1,728 sqft); Similar age (1891 vs 1890); Lot 10% smaller (5,994 vs 6,660 sqft)
    $380,000
  • 724 Czacki St Lemont, IL 60439
    1,568 sqft | $242/sqft | built 1891 | 9% smaller (1,568 vs 1,728 sqft); Similar age (1891 vs 1890); Similar lot size (6,600 vs 6,660 sqft)
    $380,000

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: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 17.1% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$410,010+$60,000+17.1%
2025$350,010$00.0%
2024$350,010$00.0%
2023$350,010+$42,020+13.6%
2022$307,990$00.0%
2021$307,990+$100.0%
2020$307,980——
6-year total+$102,030+33.1%