Cook County Value

1220 Emerald Dr Lemont, IL 60439

4 bed / 2 bath, 3,285 sqft, built 1981, in Lemont. Assessor market value for 2026: $730,000.

Cook County account 22321060050000

Assessor market value
$730,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,285 sqft
$222 per sqft
Year built
1981
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 30.4% from $560,010 in 2025 to $730,000 in 2026.
  • Assessor market value per square footThe current public record shows about $222 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

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

  • 1213 Emerald Dr Lemont, IL 60439
    3,341 sqft | $221/sqft | built 1981 | Similar size (3,341 vs 3,285 sqft); Built same year (1981); Similar lot size (40,075 vs 42,253 sqft)
    $740,000
  • 13654 Elm Ct Lemont, IL 60439
    3,358 sqft | $244/sqft | built 1985 | Similar size (3,358 vs 3,285 sqft); Similar age (1985 vs 1981); Similar lot size (43,298 vs 42,253 sqft)
    $820,000
  • 13104 Red Dr Lemont, IL 60439
    3,344 sqft | $236/sqft | built 1985 | Similar size (3,344 vs 3,285 sqft); Similar age (1985 vs 1981); Similar lot size (39,870 vs 42,253 sqft)
    $790,000
  • 13125 Raphael Lemont, IL 60439
    3,282 sqft | $262/sqft | built 1994 | Similar size (3,282 vs 3,285 sqft); Similar lot size (40,205 vs 42,253 sqft); Same quality (Average)
    $860,000
  • 22 Valley View Dr Lemont, IL 60439
    3,280 sqft | $238/sqft | built 1996 | Similar size (3,280 vs 3,285 sqft); Similar lot size (40,946 vs 42,253 sqft); Same quality (Average)
    $780,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 1238 Acorn St Lemont, IL 60439
    2,802 sqft | $223/sqft | built 1990 | 15% size difference (2,802 sqft); Moderate age difference (9 years newer); Within 1 bedroom (3 vs 4)
    $625,000
  • 11 Cedar Ct Lemont, IL 60439
    2,722 sqft | $253/sqft | built 1990 | Moderate age difference (9 years newer); Same beds (4)
    $690,000

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 30.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$730,000+$169,990+30.4%
2025$560,010$00.0%
2024$560,010$00.0%
2023$560,010+$123,060+28.2%
2022$436,950$00.0%
2021$436,950+$100.0%
2020$436,940——
6-year total+$293,060+67.1%