Cook County Value

20230 Blackstone St, Matteson, IL 60443

3 bed / 1 bath, 1,352 sqft, built 1975, in Rich. Assessor market value for 2025: $150,000.

Cook County account 31152060240000

Assessor market value
$150,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,352 sqft
$111 per sqft
Year built
1975
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 60443 and Rich assessment pages.

Appeal deadlines

Rich 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 $150,000 in 2024 to $150,000 in 2025.
  • Assessor market value per square footThe current public record shows about $111 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Rich neighborhood and ZIP 60443.
  • Neighborhood value signalAmong 207 residential records in the same neighborhood, the average assessor market value is about $119 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.

  • 4111 Vollmer Rd, Matteson, IL 60443
    1,372 sqft | $95/sqft | built 1972 | Similar size (1,372 vs 1,352 sqft); Similar age (1972 vs 1975); Lot 13% smaller (24,300 vs 27,914 sqft)
    $130,010
  • 4201 Vollmer Rd, Matteson, IL 60443
    1,389 sqft | $101/sqft | built 1966 | Similar size (1,389 vs 1,352 sqft); Lot 12% smaller (24,700 vs 27,914 sqft); Same quality (Average)
    $140,010
  • 20211 Keystone Ave, Matteson, IL 60443
    1,472 sqft | $122/sqft | built 1967 | 9% larger (1,472 vs 1,352 sqft); Similar lot size (26,721 vs 27,914 sqft); Same quality (Average)
    $180,000
  • 4038 203rd St, Matteson, IL 60443
    1,251 sqft | $128/sqft | built 1960 | 8% smaller (1,251 vs 1,352 sqft); Similar lot size (29,846 vs 27,914 sqft); Same quality (Average)
    $160,000
  • 4101 203rd St, Matteson, IL 60443
    1,421 sqft | $101/sqft | built 1961 | 5% larger (1,421 vs 1,352 sqft); Similar lot size (30,056 vs 27,914 sqft); Same quality (Average)
    $143,580

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$150,000$00.0%
2024$150,000$00.0%
2023$150,000+$17,020+12.8%
2022$132,980$00.0%
2021$132,980+$100.0%
2020$132,970——
5-year total+$17,030+12.8%