Cook County Value

6635 N Ottawa Ave, Chicago, IL 60631

3 bed / 1 bath, 1,462 sqft, built 1925, in Jefferson. Assessor market value for 2025: $401,790.

Cook County account 09363120070000

Assessor market value
$401,790
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,462 sqft
$275 per sqft
Year built
1925
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 60631 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 $401,790 in 2024 to $401,790 in 2025.
  • Assessor market value per square footThe current public record shows about $275 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 60631.
  • Neighborhood value signalAmong 1,989 residential records in the same neighborhood, the average assessor market value is about $282 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.

  • 7001 N Osceola Ave, Chicago, IL 60631
    1,440 sqft | $266/sqft | built 1923 | Similar size (1,440 vs 1,462 sqft); Similar age (1923 vs 1925); Similar lot size (4,410 vs 4,375 sqft)
    $383,710
  • 7245 W Ibsen St, Chicago, IL 60631
    1,449 sqft | $260/sqft | built 1929 | Similar size (1,449 vs 1,462 sqft); Similar age (1929 vs 1925); Similar lot size (4,290 vs 4,375 sqft)
    $376,470
  • 6634 N Oconto Ave, Chicago, IL 60631
    1,450 sqft | $283/sqft | built 1929 | Similar size (1,450 vs 1,462 sqft); Similar age (1929 vs 1925); Similar lot size (4,250 vs 4,375 sqft)
    $410,000
  • 6525 N Oshkosh Ave, Chicago, IL 60631
    1,467 sqft | $263/sqft | built 1922 | Similar size (1,467 vs 1,462 sqft); Similar age (1922 vs 1925); Similar lot size (4,166 vs 4,375 sqft)
    $385,960
  • 6627 N Ottawa Ave, Chicago, IL 60631
    1,478 sqft | $240/sqft | built 1926 | Similar size (1,478 vs 1,462 sqft); Similar age (1926 vs 1925); Similar lot size (4,625 vs 4,375 sqft)
    $355,070

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: . 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

Down 4.3% in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$401,790−$18,220−4.3%
2024$420,010+$24,610+6.2%
2023$395,400−$17,250−4.2%
2022$412,650−$47,350−10.3%
2021$460,000+$136,320+42.1%
2020$323,680——
5-year total+$78,110+24.1%