Cook County Value

3830 N Kostner Ave, Chicago, IL 60641

4 bed / 4 bath, 4,699 sqft, built 2008, in Jefferson Assessor market value for 2025: $1,618,550.

Cook County account 13221100180000

Assessor market value
$1,618,550
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,699 sqft
$344 per sqft
Year built
2008
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 $1,618,550 in 2024 to $1,618,550 in 2025.
  • Assessor market value per square footThe current public record shows about $344 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.

  • 3903 N Kostner Ave, Chicago, IL 60641
    4,672 sqft | $330/sqft | built 2004 | Similar size (4,672 vs 4,699 sqft); Similar age (2004 vs 2008); Lot 12% smaller (6,600 vs 7,500 sqft)
    $1,540,000
  • 3736 N Tripp Ave, Chicago, IL 60641
    4,847 sqft | $364/sqft | built 2010 | Similar size (4,847 vs 4,699 sqft); Similar age (2010 vs 2008); Similar lot size (7,800 vs 7,500 sqft)
    $1,762,200
  • 3713 N Tripp Ave, Chicago, IL 60641
    4,306 sqft | $365/sqft | built 2009 | 8% smaller (4,306 vs 4,699 sqft); Similar age (2009 vs 2008); Similar lot size (7,800 vs 7,500 sqft)
    $1,570,630
  • 3842 N Kedvale Ave, Chicago, IL 60641
    4,846 sqft | $336/sqft | built 2008 | Similar size (4,846 vs 4,699 sqft); Built same year (2008); Lot 16% larger (8,700 vs 7,500 sqft)
    $1,630,000
  • 4333 N Kostner Ave, Chicago, IL 60641
    4,665 sqft | $326/sqft | built 2014 | Similar size (4,665 vs 4,699 sqft); Similar lot size (8,150 vs 7,500 sqft); Same quality (Average)
    $1,520,010

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

Down 9.5% in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$1,618,550−$170,610−9.5%
2024$1,789,160+$625,340+53.7%
2023$1,163,820$00.0%
2022$1,163,820−$46,180−3.8%
2021$1,210,000+$115,080+10.5%
2020$1,094,920——
5-year total+$523,630+47.8%