Cook County Value

108 Blackstone St Thornton, IL 60476

3 bed / 1 bath, 1,132 sqft, built 1974, in Thornton. Assessor market value for 2025: $123,660.

Cook County account 29341210100000

Assessor market value
$123,660
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,132 sqft
$109 per sqft
Year built
1974
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 60476 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 $123,660 in 2024 to $123,660 in 2025.
  • Assessor market value per square footThe current public record shows about $109 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 60476.
  • 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

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

  • 115 N Hunter St Thornton, IL 60476
    1,137 sqft | $108/sqft | built 1978 | Similar size (1,137 vs 1,132 sqft); Similar age (1978 vs 1974); Similar lot size (7,200 vs 7,200 sqft)
    $123,170
  • 212 Water St Thornton, IL 60476
    1,140 sqft | $143/sqft | built 1970 | Similar size (1,140 vs 1,132 sqft); Similar age (1970 vs 1974); Similar lot size (7,200 vs 7,200 sqft)
    $162,940
  • 517 E Margaret St Thornton, IL 60476
    1,116 sqft | $143/sqft | built 1971 | Similar size (1,116 vs 1,132 sqft); Similar age (1971 vs 1974); Similar lot size (7,281 vs 7,200 sqft)
    $160,000
  • 300 E Harriet St Thornton, IL 60476
    1,095 sqft | $110/sqft | built 1971 | Similar size (1,095 vs 1,132 sqft); Similar age (1971 vs 1974); Similar lot size (7,200 vs 7,200 sqft)
    $120,000
  • 821 Highland Ave Thornton, IL 60476
    1,138 sqft | $141/sqft | built 1962 | Similar size (1,138 vs 1,132 sqft); Similar lot size (7,501 vs 7,200 sqft); Same quality (Average)
    $160,000

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

Down 19.4% in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$123,660−$29,780−19.4%
2024$153,440−$6,560−4.1%
2023$160,000+$68,080+74.1%
2022$91,920$00.0%
2021$91,920+$100.0%
2020$91,910——
5-year total+$31,750+34.5%