Cook County Value

740 McCarthy St Lemont, IL 60439

4 bed / 2 bath, 1,600 sqft, built 1955, in Lemont. Assessor market value for 2026: $380,000.

Cook County account 22292210240000

Assessor market value
$380,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,600 sqft
$238 per sqft
Year built
1955
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 42.7% from $266,220 in 2025 to $380,000 in 2026.
  • Assessor market value per square footThe current public record shows about $238 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.

  • 522 Ledochowski St Lemont, IL 60439
    1,570 sqft | $217/sqft | built 1949 | Similar size (1,570 vs 1,600 sqft); Similar lot size (5,984 vs 5,985 sqft); Same quality (Average)
    $340,000
  • 705 Hickory St Lemont, IL 60439
    1,668 sqft | $228/sqft | built 1963 | Similar size (1,668 vs 1,600 sqft); Similar lot size (6,240 vs 5,985 sqft); Same quality (Average)
    $380,000
  • 927 Walter St Lemont, IL 60439
    1,724 sqft | $238/sqft | built 1962 | 8% larger (1,724 vs 1,600 sqft); Similar lot size (6,162 vs 5,985 sqft); Same quality (Average)
    $410,000
  • 58 E Custer St Lemont, IL 60439
    1,513 sqft | $238/sqft | built 1961 | 5% smaller (1,513 vs 1,600 sqft); Similar lot size (6,000 vs 5,985 sqft); Same quality (Average)
    $360,000
  • 815 Singer Ave Lemont, IL 60439
    1,524 sqft | $249/sqft | built 1961 | Similar size (1,524 vs 1,600 sqft); Lot 11% larger (6,660 vs 5,985 sqft); Same quality (Average)
    $380,010

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 42.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$380,000+$113,780+42.7%
2025$266,220−$32,150−10.8%
2024$298,370−$41,630−12.2%
2023$340,000+$167,080+96.6%
2022$172,920−$25,090−12.7%
2021$198,010+$200.0%
2020$197,990——
6-year total+$182,010+91.9%