Cook County Value

18119 Jason Ln, Lansing, IL 60438

4 bed / 2 bath, 2,647 sqft, built 1989, in Thornton Assessor market value for 2025: $320,000.

Cook County account 29361100450000

Assessor market value
$320,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,647 sqft
$121 per sqft
Year built
1989
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 60438 and Thornton assessment pages.

Appeal deadlines

Thornton 2026 appeal dates 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 stayed about the same, from $320,000 in 2024 to $320,000 in 2025.
  • Assessor market value per square footThe current public record shows about $121 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Thornton neighborhood and ZIP 60438.
  • Neighborhood value signalAmong 199 residential records in the same neighborhood, the average assessor market value is about $133 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

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

  • 18112 Whitman Ln, Lansing, IL 60438
    2,601 sqft | $123/sqft | built 1985 | Similar size (2,601 vs 2,647 sqft); Similar age (1985 vs 1989); Similar lot size (12,617 vs 12,793 sqft)
    $320,000
  • 1725 185th St, Lansing, IL 60438
    2,663 sqft | $128/sqft | built 1989 | Similar size (2,663 vs 2,647 sqft); Built same year (1989); Lot 13% smaller (11,100 vs 12,793 sqft)
    $340,000
  • 18106 Whitman Ln, Lansing, IL 60438
    2,348 sqft | $141/sqft | built 1985 | 11% smaller (2,348 vs 2,647 sqft); Similar age (1985 vs 1989); Similar lot size (13,017 vs 12,793 sqft)
    $330,000
  • 1862 185th St, Lansing, IL 60438
    2,568 sqft | $121/sqft | built 1992 | Similar size (2,568 vs 2,647 sqft); Similar age (1992 vs 1989); Lot 16% smaller (10,762 vs 12,793 sqft)
    $310,000
  • 18240 Clyde Ave, Lansing, IL 60438
    2,333 sqft | $129/sqft | built 1983 | 12% smaller (2,333 vs 2,647 sqft); Similar lot size (12,369 vs 12,793 sqft); Same quality (Average)
    $300,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

Public appraisal comparison for 2025. 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

No change in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$320,000$00.0%
2024$320,000$00.0%
2023$320,000+$116,420+57.2%
2022$203,580$00.0%
2021$203,580+$100.0%
2020$203,570——
5-year total+$116,430+57.2%