Cook County Value

727 Warner Ave Lemont, IL 60439

2 bed / 1 bath, 836 sqft, built 1881, in Lemont. Assessor market value for 2026: $200,000.

Cook County account 22291100100000

Assessor market value
$200,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
836 sqft
$239 per sqft
Year built
1881
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 25.0% from $160,000 in 2025 to $200,000 in 2026.
  • Assessor market value per square footThe current public record shows about $239 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.

  • 725 Warner Ave Lemont, IL 60439
    836 sqft | $239/sqft | built 1883 | Similar size (836 vs 836 sqft); Similar age (1883 vs 1881); Similar lot size (4,061 vs 4,061 sqft)
    $200,000
  • 541 McCarthy St Lemont, IL 60439
    784 sqft | $255/sqft | built 1892 | 6% smaller (784 vs 836 sqft); Similar lot size (3,990 vs 4,061 sqft); Same quality (Average)
    $200,000
  • 723 Warner Ave Lemont, IL 60439
    796 sqft | $276/sqft | built 1878 | Similar size (796 vs 836 sqft); Similar age (1878 vs 1881); Lot 13% larger (4,572 vs 4,061 sqft)
    $220,010
  • 706 McCarthy St Lemont, IL 60439
    760 sqft | $237/sqft | built 1888 | 9% smaller (760 vs 836 sqft); Similar lot size (3,990 vs 4,061 sqft); Same quality (Average)
    $180,000
  • 712 E Illinois St Lemont, IL 60439
    780 sqft | $231/sqft | built 1886 | 7% smaller (780 vs 836 sqft); Similar age (1886 vs 1881); Lot 15% larger (4,650 vs 4,061 sqft)
    $180,000

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: . 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 25.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$200,000+$40,000+25.0%
2025$160,000$00.0%
2024$160,000$00.0%
2023$160,000+$33,230+26.2%
2022$126,770$00.0%
2021$126,770+$100.0%
2020$126,760——
6-year total+$73,240+57.8%