Cook County Value

1236 Gunderson Ave, Berwyn, IL 60402

2 bed / 2 bath, 671 sqft, built 1920, in Berwyn. Assessor market value for 2026: $210,000.

Cook County account 16192050360000

Assessor market value
$210,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
671 sqft
$313 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 60402 and Berwyn assessment pages.

Local guide: Berwyn Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for Berwyn have closed (Assessor , Board of Review ). 2027 notices usually start in March.

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 12.5% from $240,000 in 2025 to $210,000 in 2026.
  • Assessor market value per square footThe current public record shows about $313 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Berwyn neighborhood and ZIP 60402.
  • Neighborhood value signalAmong 2,546 residential records in the same neighborhood, the average assessor market value is about $199 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +16.9% on average.

Comparable assessments

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

  • 1517 Home Ave, Berwyn, IL 60402
    672 sqft | $268/sqft | built 1926 | Similar size (672 vs 671 sqft); Similar lot size (5,100 vs 4,725 sqft); Same quality (Average)
    $180,010
  • 1336 Harvey Ave, Berwyn, IL 60402
    704 sqft | $241/sqft | built 1913 | Similar size (704 vs 671 sqft); Similar lot size (5,080 vs 4,725 sqft); Same quality (Average)
    $170,000
  • 1520 Elmwood Ave, Berwyn, IL 60402
    721 sqft | $222/sqft | built 1913 | 8% larger (721 vs 671 sqft); Similar lot size (4,725 vs 4,725 sqft); Same quality (Average)
    $160,000
  • 1427 Kenilworth Ave, Berwyn, IL 60402
    739 sqft | $271/sqft | built 1922 | 10% larger (739 vs 671 sqft); Similar age (1922 vs 1920); Lot 13% smaller (4,112 vs 4,725 sqft)
    $200,000
  • 1421 Kenilworth Ave, Berwyn, IL 60402
    736 sqft | $231/sqft | built 1922 | 10% larger (736 vs 671 sqft); Similar age (1922 vs 1920); Lot 13% smaller (4,112 vs 4,725 sqft)
    $170,000

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 12.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$210,000−$30,000−12.5%
2025$240,000$00.0%
2024$240,000$00.0%
2023$240,000+$117,180+95.4%
2022$122,820$00.0%
2021$122,820+$200.0%
2020$122,800——
6-year total+$87,200+71.0%