Cook County Value

17912 Decker Ave, Lansing, IL 60438

3 bed / 1 bath, 1,288 sqft, built 1959, in Thornton. Assessor market value for 2025: $156,000.

Cook County account 29362011320000

Assessor market value
$156,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,288 sqft
$121 per sqft
Year built
1959
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 $156,000 in 2024 to $156,000 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 2,724 residential records in the same neighborhood, the average assessor market value is about $102 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.

  • 17651 Bernadine St, Lansing, IL 60438
    1,300 sqft | $109/sqft | built 1960 | Similar size (1,300 vs 1,288 sqft); Similar age (1960 vs 1959); Similar lot size (7,320 vs 7,560 sqft)
    $142,000
  • 18013 Lorenz Ave, Lansing, IL 60438
    1,276 sqft | $110/sqft | built 1955 | Similar size (1,276 vs 1,288 sqft); Similar age (1955 vs 1959); Similar lot size (7,500 vs 7,560 sqft)
    $140,010
  • 17619 Bernadine St, Lansing, IL 60438
    1,304 sqft | $104/sqft | built 1963 | Similar size (1,304 vs 1,288 sqft); Similar age (1963 vs 1959); Similar lot size (7,320 vs 7,560 sqft)
    $135,000
  • 17936 Arcadia Ave, Lansing, IL 60438
    1,296 sqft | $139/sqft | built 1952 | Similar size (1,296 vs 1,288 sqft); Similar lot size (7,440 vs 7,560 sqft); Same quality (Average)
    $180,000
  • 17929 Locust St, Lansing, IL 60438
    1,285 sqft | $111/sqft | built 1966 | Similar size (1,285 vs 1,288 sqft); Similar lot size (7,300 vs 7,560 sqft); Same quality (Average)
    $142,010

Recent comparable sales

Sales selected by similarity to the subject property.

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$156,000$00.0%
2024$156,000$00.0%
2023$156,000+$50,060+47.3%
2022$105,940$00.0%
2021$105,940$00.0%
2020$105,940——
5-year total+$50,060+47.3%