Cook County Value

917 Singer Ave Lemont, IL 60439

2 bed / 1 bath, 760 sqft, built 1888, in Lemont. Assessor market value for 2026: $230,010.

Cook County account 22291190060000

Likely too high

about $25,000

8 similar homes nearby point to a value about $25,000 lower than yours.

Assessor market value$230,010
Similar homes$204,599
$25,411 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$230,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
760 sqft
$303 per sqft
Year built
1888
Average quality

Why we think so

Similar homes' assessments

Strong

5 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $267.86/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $58,280. Counting your land in place of theirs where theirs is less, they support a value of $204,599.

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 44.0% from $159,740 in 2025 to $230,010 in 2026.
  • Assessor market value per square footThe current public record shows about $303 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

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 726 Ledochowski St Lemont, IL 60439
    784 sqft | $268/sqft | built 1888 | Similar size (784 vs 760 sqft); Built same year (1888); Similar lot size (6,750 vs 6,660 sqft)
    $210,000
  • 511 Czacki St Lemont, IL 60439
    728 sqft | $330/sqft | built 1888 | Similar size (728 vs 760 sqft); Built same year (1888); Similar lot size (6,800 vs 6,660 sqft)
    $240,000
  • 714 East St Lemont, IL 60439
    768 sqft | $234/sqft | built 1893 | Similar size (768 vs 760 sqft); Similar age (1893 vs 1888); Similar lot size (6,240 vs 6,660 sqft)
    $180,000
  • 16048 W New Ave Lemont, IL 60439
    752 sqft | $293/sqft | built 1888 | Similar size (752 vs 760 sqft); Built same year (1888); Lot 12% smaller (5,888 vs 6,660 sqft)
    $220,000
  • 731 Ledochowski St Lemont, IL 60439
    729 sqft | $261/sqft | built 1880 | Similar size (729 vs 760 sqft); Similar lot size (6,600 vs 6,660 sqft); Same quality (Average)
    $190,000

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 44.0% 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+$70,270+44.0%
2025$159,740−$12,990−7.5%
2024$172,730−$17,280−9.1%
2023$190,010+$78,400+70.2%
2022$111,610$00.0%
2021$111,610+$100.0%
2020$111,600——
6-year total+$118,410+106.1%