Cook County Value

317 N Blackstone St Thornton, IL 60476

3 bed / 1 bath, 1,406 sqft, built 1948, in Thornton. Assessor market value for 2025: $132,940.

Cook County account 29341060020000

Assessor market value
$132,940
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,406 sqft
$95 per sqft
Year built
1948
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 $132,940 in 2024 to $132,940 in 2025.
  • Assessor market value per square footThe current public record shows about $95 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

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

  • 143 Laura Ln Thornton, IL 60476
    1,400 sqft | $107/sqft | built 1958 | Similar size (1,400 vs 1,406 sqft); Similar lot size (7,611 vs 7,680 sqft); Same quality (Average)
    $150,000
  • 117 Queens Ln Thornton, IL 60476
    1,435 sqft | $98/sqft | built 1956 | Similar size (1,435 vs 1,406 sqft); Similar lot size (7,772 vs 7,680 sqft); Same quality (Average)
    $140,000
  • 718 Forrest Ln Thornton, IL 60476
    1,382 sqft | $36/sqft | built 1956 | Similar size (1,382 vs 1,406 sqft); Similar lot size (7,500 vs 7,680 sqft); Same quality (Average)
    $50,000
  • 718 Forrest Ln Thornton, IL 60476
    1,382 sqft | $80/sqft | built 1956 | Similar size (1,382 vs 1,406 sqft); Similar lot size (7,500 vs 7,680 sqft); Same quality (Average)
    $110,000
  • 322 Brownell St Thornton, IL 60476
    1,342 sqft | $89/sqft | built 1947 | Similar size (1,342 vs 1,406 sqft); Similar age (1947 vs 1948); Similar lot size (8,050 vs 7,680 sqft)
    $120,000

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$132,940$00.0%
2024$132,940−$7,060−5.0%
2023$140,000+$59,680+74.3%
2022$80,320$00.0%
2021$80,320−$11,500−12.5%
2020$91,820——
5-year total+$41,120+44.8%