Cook County Value

4240 W 21st Pl, Chicago, IL 60623

4 bed / 2 bath, 2,648 sqft, built 1910, in West Chicago Assessor market value for 2026: $240,010.

Cook County account 16224220270000

Assessor market value
$240,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,648 sqft
$91 per sqft
Year built
1910
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 60623 and West Chicago assessment pages.

Local guide: West Chicago Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For West Chicago, appeals to the Assessor closed . Board of Review dates for West Chicago 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 $240,010 in 2025 to $240,010 in 2026.
  • Assessor market value per square footThe current public record shows about $91 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the West Chicago neighborhood and ZIP 60623.
  • Neighborhood value signalAmong 635 residential records in the same neighborhood, the average assessor market value is about $95 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -0.8% on average.

Comparable assessments

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

  • 4104 W 21st Pl 1, Chicago, IL 60623
    2,664 sqft | $83/sqft | built 1908 | Similar size (2,664 vs 2,648 sqft); Similar age (1908 vs 1910); Similar lot size (3,750 vs 3,750 sqft)
    $220,010
  • 4229 W 21st Pl, Chicago, IL 60623
    2,640 sqft | $87/sqft | built 1913 | Similar size (2,640 vs 2,648 sqft); Similar age (1913 vs 1910); Similar lot size (3,750 vs 3,750 sqft)
    $230,010
  • 4110 W 21st Pl 2, Chicago, IL 60623
    2,640 sqft | $91/sqft | built 1906 | Similar size (2,640 vs 2,648 sqft); Similar age (1906 vs 1910); Similar lot size (3,750 vs 3,750 sqft)
    $240,010
  • 4054 W Cermak Rd 1, Chicago, IL 60623
    2,574 sqft | $82/sqft | built 1910 | Similar size (2,574 vs 2,648 sqft); Built same year (1910); Similar lot size (3,750 vs 3,750 sqft)
    $210,010
  • 4316 W 21st Pl, Chicago, IL 60623
    2,694 sqft | $89/sqft | built 1912 | Similar size (2,694 vs 2,648 sqft); Similar age (1912 vs 1910); Similar lot size (3,750 vs 3,750 sqft)
    $240,010

Recent comparable sales

Sales selected by similarity to the subject property.

Public appraisal comparison for 2026. 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 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$240,010$00.0%
2025$240,010$00.0%
2024$240,010+$145,010+152.6%
2023$95,000$00.0%
2022$95,000$00.0%
2021$95,000−$25,220−21.0%
2020$120,220——
6-year total+$119,790+99.6%