Cook County Value

4209 N Mobile Ave, Chicago, IL 60634

10 bed / 5 bath, 4,418 sqft, built 1920, in Jefferson. Assessor market value for 2025: $670,000.

Cook County account 13173020990000

Assessor market value
$670,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,418 sqft
$152 per sqft
Year built
1920
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 60634 and Jefferson assessment pages.

Appeal deadlines

Jefferson 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 $670,000 in 2024 to $670,000 in 2025.
  • Assessor market value per square footThe current public record shows about $152 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Jefferson neighborhood and ZIP 60634.
  • Neighborhood value signalAmong 9,759 residential records in the same neighborhood, the average assessor market value is about $249 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 3848 N Central Ave, Chicago, IL 60634
    4,096 sqft | $142/sqft | built 1919 | 7% smaller (4,096 vs 4,418 sqft); Similar age (1919 vs 1920); Similar lot size (4,375 vs 4,334 sqft)
    $580,010
  • 5859 W Byron St, Chicago, IL 60634
    4,674 sqft | $163/sqft | built 1917 | 6% larger (4,674 vs 4,418 sqft); Similar age (1917 vs 1920); Similar lot size (4,199 vs 4,334 sqft)
    $760,010
  • 3936 N Lockwood Ave, Chicago, IL 60641
    4,252 sqft | $158/sqft | built 1923 | Similar size (4,252 vs 4,418 sqft); Similar age (1923 vs 1920); Similar lot size (3,958 vs 4,334 sqft)
    $670,000
  • 3921 N Long Ave, Chicago, IL 60641
    4,420 sqft | $143/sqft | built 1925 | Similar size (4,420 vs 4,418 sqft); Similar age (1925 vs 1920); Similar lot size (3,955 vs 4,334 sqft)
    $630,010
  • 5200 W Grace St, Chicago, IL 60641
    4,140 sqft | $150/sqft | built 1921 | 6% smaller (4,140 vs 4,418 sqft); Similar age (1921 vs 1920); Similar lot size (3,995 vs 4,334 sqft)
    $620,010

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$670,000$00.0%
2024$670,000+$160,000+31.4%
2023$510,000$00.0%
2022$510,000$00.0%
2021$510,000+$141,490+38.4%
2020$368,510——
5-year total+$301,490+81.8%