Cook County Value

818 Singer Ave Lemont, IL 60439

2 bed / 1 bath, 1,073 sqft, built 1893, in Lemont. Assessor market value for 2026: $370,000.

Cook County account 22291150170000

Assessor market value
$370,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,073 sqft
$345 per sqft
Year built
1893
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 changed from $200,000 in 2025 to $370,000 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
  • Assessor market value per square footThe current public record shows about $345 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.

  • 221 Short St Lemont, IL 60439
    1,053 sqft | $247/sqft | built 1892 | Similar size (1,053 vs 1,073 sqft); Similar age (1892 vs 1893); Similar lot size (8,336 vs 8,520 sqft)
    $260,000
  • 723 State St Lemont, IL 60439
    1,050 sqft | $219/sqft | built 1888 | Similar size (1,050 vs 1,073 sqft); Similar age (1888 vs 1893); Similar lot size (8,520 vs 8,520 sqft)
    $230,000
  • 16114 W New Ave Lemont, IL 60439
    1,043 sqft | $259/sqft | built 1893 | Similar size (1,043 vs 1,073 sqft); Built same year (1893); Lot 14% smaller (7,360 vs 8,520 sqft)
    $270,000
  • 16074 W New Ave Lemont, IL 60439
    1,109 sqft | $151/sqft | built 1887 | Similar size (1,109 vs 1,073 sqft); Similar lot size (9,200 vs 8,520 sqft); Same quality (Average)
    $167,450
  • 824 Singer Ave Lemont, IL 60439
    1,020 sqft | $353/sqft | built 1885 | Similar size (1,020 vs 1,073 sqft); Similar lot size (8,520 vs 8,520 sqft); Same quality (Average)
    $360,000

Recent comparable sales

Sales selected by similarity to the subject property.

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 85.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$370,000+$170,000+85.0%
2025$200,000$00.0%
2024$200,000$00.0%
2023$200,000+$13,870+7.5%
2022$186,130$00.0%
2021$186,130+$100.0%
2020$186,120——
6-year total+$183,880+98.8%