Cook County Value

815 Wesley Ave, Oak Park, IL 60304

3 bed / 1 bath, 1,470 sqft, built 1919, in Oak Park. Assessor market value for 2026: $488,460.

Cook County account 16182250220000

Assessor market value
$488,460
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,470 sqft
$332 per sqft
Year built
1919
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 30.3% from $374,850 in 2025 to $488,460 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 1,503 residential records in the same neighborhood, the average assessor market value is about $318 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +27.4% on average.

Comparable assessments

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

  • 520 Carpenter Ave, Oak Park, IL 60304
    1,450 sqft | $310/sqft | built 1919 | Similar size (1,450 vs 1,470 sqft); Built same year (1919); Similar lot size (3,600 vs 3,780 sqft)
    $450,000
  • 842 Wisconsin Ave, Oak Park, IL 60304
    1,442 sqft | $305/sqft | built 1923 | Similar size (1,442 vs 1,470 sqft); Similar age (1923 vs 1919); Similar lot size (3,750 vs 3,780 sqft)
    $440,000
  • 837 Wesley Ave, Oak Park, IL 60304
    1,488 sqft | $302/sqft | built 1918 | Similar size (1,488 vs 1,470 sqft); Similar age (1918 vs 1919); Similar lot size (3,780 vs 3,780 sqft)
    $450,000
  • 531 Clarence Ave, Oak Park, IL 60304
    1,442 sqft | $326/sqft | built 1915 | Similar size (1,442 vs 1,470 sqft); Similar age (1915 vs 1919); Similar lot size (3,750 vs 3,780 sqft)
    $470,000
  • 707 Carpenter Ave, Oak Park, IL 60304
    1,468 sqft | $339/sqft | built 1912 | Similar size (1,468 vs 1,470 sqft); Similar lot size (3,600 vs 3,780 sqft); Same quality (Average)
    $497,860

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

Up 30.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$488,460+$113,610+30.3%
2025$374,850$00.0%
2024$374,850−$15,150−3.9%
2023$390,000+$59,660+18.1%
2022$330,340$00.0%
2021$330,340−$20,820−5.9%
2020$351,160——
6-year total+$137,300+39.1%