Cook County Value

1138 Wenonah Ave, Oak Park, IL 60304

3 bed / 2 bath, 1,658 sqft, built 1906, in Oak Park. Assessor market value for 2026: $550,000.

Cook County account 16183180140000

Assessor market value
$550,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,658 sqft
$332 per sqft
Year built
1906
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 60304, Oak Park, and Oak Park assessment pages.

Local guide: Oak Park Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for Oak Park 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 increased 17.9% from $466,300 in 2025 to $550,000 in 2026.
  • Assessor market value per square footThe current public record shows about $332 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Oak Park neighborhood and ZIP 60304.
  • Neighborhood value signalAmong 1,599 residential records in the same neighborhood, the average assessor market value is about $303 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +19.0% on average.

Comparable assessments

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

  • 1106 Wenonah Ave, Oak Park, IL 60304
    1,674 sqft | $329/sqft | built 1907 | Similar size (1,674 vs 1,658 sqft); Similar age (1907 vs 1906); Similar lot size (5,625 vs 5,625 sqft)
    $550,000
  • 1035 Home Ave, Oak Park, IL 60304
    1,652 sqft | $329/sqft | built 1903 | Similar size (1,652 vs 1,658 sqft); Similar age (1903 vs 1906); Similar lot size (5,625 vs 5,625 sqft)
    $544,100
  • 1015 Home Ave, Oak Park, IL 60304
    1,700 sqft | $347/sqft | built 1905 | Similar size (1,700 vs 1,658 sqft); Similar age (1905 vs 1906); Similar lot size (5,625 vs 5,625 sqft)
    $590,000
  • 1124 Wenonah Ave, Oak Park, IL 60304
    1,628 sqft | $344/sqft | built 1906 | Similar size (1,628 vs 1,658 sqft); Built same year (1906); Similar lot size (5,625 vs 5,625 sqft)
    $560,000
  • 1005 Home Ave, Oak Park, IL 60304
    1,637 sqft | $336/sqft | built 1904 | Similar size (1,637 vs 1,658 sqft); Similar age (1904 vs 1906); Similar lot size (5,625 vs 5,625 sqft)
    $550,000

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: . 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

Up 17.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$550,000+$83,700+17.9%
2025$466,300−$33,700−6.7%
2024$500,000$00.0%
2023$500,000+$156,250+45.5%
2022$343,750$00.0%
2021$343,750−$38,990−10.2%
2020$382,740——
6-year total+$167,260+43.7%