Cook County Value

1002 Warner Ave Lemont, IL 60439

2 bed / 1 bath, 780 sqft, built 1947, in Lemont. Assessor market value for 2026: $240,000.

Cook County account 22293040140000

Assessor market value
$240,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
780 sqft
$308 per sqft
Year built
1947
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 26.3% from $190,000 in 2025 to $240,000 in 2026.
  • Assessor market value per square footThe current public record shows about $308 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

Similar public appraisal records selected for this property's equity comparison.

  • 1007 Walter St Lemont, IL 60439
    630 sqft | $381/sqft | built 1947 | Built same year (1947); Similar lot size (6,272 vs 6,272 sqft); Same quality (Average)
    $240,000
  • 22 Peiffer St Lemont, IL 60439
    950 sqft | $305/sqft | built 1953 | Similar lot size (6,272 vs 6,272 sqft); Same quality (Average); Same bed/bath (2/1)
    $290,000
  • 54 Peiffer St Lemont, IL 60439
    678 sqft | $398/sqft | built 1932 | 13% smaller (678 vs 780 sqft); Lot 12% larger (7,007 vs 6,272 sqft); Same quality (Average)
    $270,000
  • 1109 Cherokee Pl Lemont, IL 60439
    925 sqft | $292/sqft | built 1959 | Lot 16% larger (7,296 vs 6,272 sqft); Same quality (Average); Same bed/bath (2/1)
    $270,000
  • 1109 Kim Pl Lemont, IL 60439
    905 sqft | $298/sqft | built 1957 | Same quality (Average); Same bed/bath (2/1); Same neighborhood
    $270,000

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 26.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$240,000+$50,000+26.3%
2025$190,000$00.0%
2024$190,000$00.0%
2023$190,000+$34,710+22.4%
2022$155,290$00.0%
2021$155,290$00.0%
2020$155,290——
6-year total+$84,710+54.5%