Cook County Value

3907 N Kostner Ave 1, Chicago, IL 60641

6 bed / 3 bath, 2,456 sqft, built 1913, in Jefferson. Assessor market value for 2025: $620,000.

Cook County account 13221050130000

Assessor market value
$620,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,456 sqft
$252 per sqft
Year built
1913
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 60641 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 $620,000 in 2024 to $620,000 in 2025.
  • Assessor market value per square footThe current public record shows about $252 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 60641.
  • Neighborhood value signalAmong 1,215 residential records in the same neighborhood, the average assessor market value is about $329 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.

  • 4322 N Tripp Ave 1, Chicago, IL 60641
    2,380 sqft | $213/sqft | built 1914 | Similar size (2,380 vs 2,456 sqft); Similar age (1914 vs 1913); Similar lot size (3,900 vs 3,960 sqft)
    $506,240
  • 4320 N Tripp Ave, Chicago, IL 60641
    2,380 sqft | $195/sqft | built 1915 | Similar size (2,380 vs 2,456 sqft); Similar age (1915 vs 1913); Similar lot size (3,900 vs 3,960 sqft)
    $464,640
  • 4059 W Patterson Ave, Chicago, IL 60641
    2,502 sqft | $244/sqft | built 1908 | Similar size (2,502 vs 2,456 sqft); Similar age (1908 vs 1913); Similar lot size (4,092 vs 3,960 sqft)
    $610,000
  • 4057 W Waveland Ave, Chicago, IL 60641
    2,466 sqft | $247/sqft | built 1917 | Similar size (2,466 vs 2,456 sqft); Similar age (1917 vs 1913); Similar lot size (3,968 vs 3,960 sqft)
    $610,000
  • 3655 N Tripp Ave, Chicago, IL 60641
    2,411 sqft | $241/sqft | built 1900 | Similar size (2,411 vs 2,456 sqft); Similar lot size (3,900 vs 3,960 sqft); Same quality (Average)
    $580,000

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: . 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$620,000$00.0%
2024$620,000+$110,000+21.6%
2023$510,000$00.0%
2022$510,000$00.0%
2021$510,000+$138,270+37.2%
2020$371,730——
5-year total+$248,270+66.8%