Cook County Value

21 S Mayfield Ave Hse, Chicago, IL 60644

3 bed / 1 bath, 1,488 sqft, built 1906, in West Chicago. Assessor market value for 2026: $180,650.

Cook County account 16172020120000

Assessor market value
$180,650
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,488 sqft
$121 per sqft
Year built
1906
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 60644 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 decreased 35.5% from $280,000 in 2025 to $180,650 in 2026.
  • Assessor market value per square footThe current public record shows about $121 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 60644.
  • Neighborhood value signalAmong 6,607 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 moved about -0.1% on average.

Comparable assessments

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

  • 644 N Latrobe Ave, Chicago, IL 60644
    1,482 sqft | $125/sqft | built 1911 | Similar size (1,482 vs 1,488 sqft); Similar age (1911 vs 1906); Similar lot size (5,670 vs 5,866 sqft)
    $185,000
  • 5409 W Iowa St, Chicago, IL 60651
    1,479 sqft | $125/sqft | built 1908 | Similar size (1,479 vs 1,488 sqft); Similar age (1908 vs 1906); Similar lot size (6,250 vs 5,866 sqft)
    $185,000
  • 123 N Long Ave, Chicago, IL 60644
    1,472 sqft | $102/sqft | built 1903 | Similar size (1,472 vs 1,488 sqft); Similar age (1903 vs 1906); Similar lot size (5,475 vs 5,866 sqft)
    $150,000
  • 39 N Parkside Ave, Chicago, IL 60644
    1,472 sqft | $126/sqft | built 1903 | Similar size (1,472 vs 1,488 sqft); Similar age (1903 vs 1906); Similar lot size (5,562 vs 5,866 sqft)
    $185,000
  • 5433 W Walton St, Chicago, IL 60651
    1,472 sqft | $126/sqft | built 1903 | Similar size (1,472 vs 1,488 sqft); Similar age (1903 vs 1906); Similar lot size (6,250 vs 5,866 sqft)
    $185,000

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: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Down 35.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$180,650−$99,350−35.5%
2025$280,000$00.0%
2024$280,000+$80,000+40.0%
2023$200,000$00.0%
2022$200,000$00.0%
2021$200,000+$46,930+30.7%
2020$153,070——
6-year total+$27,580+18.0%