Cook County Value

1311 Acorn St Lemont, IL 60439

4 bed / 2 bath, 3,652 sqft, built 1993, in Lemont. Assessor market value for 2026: $710,000.

Cook County account 22321030240000

Assessor market value
$710,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,652 sqft
$194 per sqft
Year built
1993
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 22.4% from $580,000 in 2025 to $710,000 in 2026.
  • Assessor market value per square footThe current public record shows about $194 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 2,806 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 +30.4% on average.

Comparable assessments

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

  • 1275 Acorn St Lemont, IL 60439
    3,603 sqft | $203/sqft | built 1993 | Similar size (3,603 vs 3,652 sqft); Built same year (1993); Similar lot size (11,475 vs 12,015 sqft)
    $730,000
  • 1237 Notre Dame Dr Lemont, IL 60439
    3,622 sqft | $213/sqft | built 1998 | Similar size (3,622 vs 3,652 sqft); Similar age (1998 vs 1993); Similar lot size (11,758 vs 12,015 sqft)
    $770,010
  • 95 Doolin St Lemont, IL 60439
    3,701 sqft | $195/sqft | built 1993 | Similar size (3,701 vs 3,652 sqft); Built same year (1993); Similar lot size (12,846 vs 12,015 sqft)
    $720,000
  • 1255 Acorn St Lemont, IL 60439
    3,631 sqft | $209/sqft | built 1991 | Similar size (3,631 vs 3,652 sqft); Similar age (1991 vs 1993); Similar lot size (12,730 vs 12,015 sqft)
    $760,000
  • 1026 119th St Lemont, IL 60439
    3,616 sqft | $227/sqft | built 1997 | Similar size (3,616 vs 3,652 sqft); Similar age (1997 vs 1993); Similar lot size (11,033 vs 12,015 sqft)
    $820,000

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 22.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$710,000+$130,000+22.4%
2025$580,000$00.0%
2024$580,000$00.0%
2023$580,000+$148,030+34.3%
2022$431,970$00.0%
2021$431,970+$200.0%
2020$431,950——
6-year total+$278,050+64.4%