Cook County Value

1024 Warner Ave Lemont, IL 60439

3 bed / 1 bath, 1,096 sqft, built 1959, in Lemont. Assessor market value for 2026: $320,000.

Cook County account 22293040230000

Small or uncertain difference

about $5,000

8 similar homes nearby point to a value about $5,000 lower than yours, a small or uncertain difference.

Assessor market value$320,000
Similar homes$314,595
$5,405 gap · bars start at $0

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

Assessor market value
$320,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,096 sqft
$292 per sqft
Year built
1959
Average quality

Why we think so

Similar homes' assessments

Weak

4 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $287.04/sqft, which supports a value of $314,595.

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 23.1% from $260,000 in 2025 to $320,000 in 2026.
  • Assessor market value per square footThe current public record shows about $292 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 636 residential records in the same neighborhood, the average assessor market value is about $286 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +33.3% on average.

Comparable assessments

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

  • 1014 Florence St Lemont, IL 60439
    1,105 sqft | $179/sqft | built 1961 | Similar size (1,105 vs 1,096 sqft); Similar age (1961 vs 1959); Similar lot size (6,272 vs 6,272 sqft)
    $197,440
  • 7 Weimer St Lemont, IL 60439
    1,072 sqft | $326/sqft | built 1966 | Similar size (1,072 vs 1,096 sqft); Similar lot size (6,375 vs 6,272 sqft); Same quality (Average)
    $350,000
  • 1020 Warner Ave Lemont, IL 60439
    1,080 sqft | $287/sqft | built 1970 | Similar size (1,080 vs 1,096 sqft); Similar lot size (6,272 vs 6,272 sqft); Same quality (Average)
    $310,000
  • 9 Weimer St Lemont, IL 60439
    1,072 sqft | $326/sqft | built 1973 | Similar size (1,072 vs 1,096 sqft); Similar lot size (6,375 vs 6,272 sqft); Same quality (Average)
    $350,000
  • 1009 Warner Ave Lemont, IL 60439
    1,120 sqft | $286/sqft | built 1952 | Similar size (1,120 vs 1,096 sqft); Lot 12% larger (7,007 vs 6,272 sqft); Same quality (Average)
    $320,000

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 23.1% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$320,000+$60,000+23.1%
2025$260,000$00.0%
2024$260,000$00.0%
2023$260,000+$83,260+47.1%
2022$176,740$00.0%
2021$176,740+$100.0%
2020$176,730——
6-year total+$143,270+81.1%