Cook County Value

18200 Blackstone, Lansing, IL 60438

3 bed / 2 bath, 1,616 sqft, built 1939, in Thornton. Assessor market value for 2025: $130,200.

Cook County account 29354050090000

Assessor market value
$130,200
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,616 sqft
$81 per sqft
Year built
1939
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 $130,200 in 2024 to $130,200 in 2025.
  • Assessor market value per square footThe current public record shows about $81 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 955 residential records in the same neighborhood, the average assessor market value is about $118 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.

  • 303 Malette St Thornton, IL 60476
    1,647 sqft | $85/sqft | built 1950 | Similar size (1,647 vs 1,616 sqft); Similar lot size (16,100 vs 16,300 sqft); Same quality (Average)
    $140,000
  • 327 Malette St Thornton, IL 60476
    1,694 sqft | $94/sqft | built 1954 | Similar size (1,694 vs 1,616 sqft); Similar lot size (16,100 vs 16,300 sqft); Same quality (Average)
    $160,000
  • 310 Malette St Thornton, IL 60476
    1,728 sqft | $98/sqft | built 1925 | 7% larger (1,728 vs 1,616 sqft); Similar lot size (16,100 vs 16,300 sqft); Same quality (Average)
    $170,000
  • 809 Margaret St Thornton, IL 60476
    1,388 sqft | $122/sqft | built 1936 | 14% smaller (1,388 vs 1,616 sqft); Similar age (1936 vs 1939); Lot 10% smaller (14,625 vs 16,300 sqft)
    $170,000
  • 18225 Dante Ave, Lansing, IL 60438
    1,388 sqft | $79/sqft | built 1945 | 14% smaller (1,388 vs 1,616 sqft); Similar lot size (16,552 vs 16,300 sqft); Same quality (Average)
    $109,950

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: . 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

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$130,200$00.0%
2024$130,200$00.0%
2023$130,200+$39,480+43.5%
2022$90,720$00.0%
2021$90,720$00.0%
2020$90,720——
5-year total+$39,480+43.5%