Cook County Value

6641 S Ellis Ave, Chicago, IL 60637

12 bed / 6 bath, 6,576 sqft, built 1919, in Hyde Park. Assessor market value for 2026: $418,070.

Cook County account 20231240120000

Assessor market value
$418,070
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
6,576 sqft
$64 per sqft
Year built
1919
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 60637, Hyde Park, and Hyde Park assessment pages.

Local guide: Hyde Park Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Hyde Park, appeals to the Assessor closed . Board of Review dates for Hyde Park 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 decreased 21.0% from $529,210 in 2025 to $418,070 in 2026.
  • Assessor market value per square footThe current public record shows about $64 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Hyde Park neighborhood and ZIP 60637.
  • Neighborhood value signalAmong 3,156 residential records in the same neighborhood, the average assessor market value is about $108 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -0.5% on average.

Comparable assessments

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

  • 6635 S Ellis Ave, Chicago, IL 60637
    6,576 sqft | $82/sqft | built 1917 | Similar size (6,576 vs 6,576 sqft); Similar age (1917 vs 1919); Similar lot size (6,300 vs 6,300 sqft)
    $536,440
  • 1417 E 67th Pl, Chicago, IL 60637
    6,492 sqft | $77/sqft | built 1910 | Similar size (6,492 vs 6,576 sqft); Similar lot size (6,251 vs 6,300 sqft); Same quality (Average)
    $500,000
  • 1432 E 73rd St, Chicago, IL 60619
    6,846 sqft | $63/sqft | built 1924 | Similar size (6,846 vs 6,576 sqft); Similar age (1924 vs 1919); Similar lot size (6,250 vs 6,300 sqft)
    $428,000
  • 1429 E 67th Pl, Chicago, IL 60637
    6,702 sqft | $64/sqft | built 1911 | Similar size (6,702 vs 6,576 sqft); Similar lot size (6,440 vs 6,300 sqft); Same quality (Average)
    $428,330
  • 6430 S Ellis Ave, Chicago, IL 60637
    6,972 sqft | $81/sqft | built 1914 | 6% larger (6,972 vs 6,576 sqft); Similar age (1914 vs 1919); Similar lot size (6,250 vs 6,300 sqft)
    $564,780

Recent comparable sales

No usable comparable sales are available in this data snapshot.

Public appraisal comparison for 2026. 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 21.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$418,070−$111,140−21.0%
2025$529,210−$60,790−10.3%
2024$590,000+$310,680+111.2%
2023$279,320−$51,950−15.7%
2022$331,270−$78,730−19.2%
2021$410,000+$219,570+115.3%
2020$190,430——
6-year total+$227,640+119.5%