Cook County Value

818 Forest Ave, Oak Park, IL 60302

4 bed / 3 bath, 3,930 sqft, built 2011, in Oak Park. Assessor market value for 2026: $1,340,760.

Cook County account 16063030080000

Assessor market value
$1,340,760
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,930 sqft
$341 per sqft
Year built
2011
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 60302, 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 34.6% from $996,390 in 2025 to $1,340,760 in 2026.
  • Assessor market value per square footThe current public record shows about $341 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 60302.
  • Neighborhood value signalAmong 1,390 residential records in the same neighborhood, the average assessor market value is about $323 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +22.6% on average.

Comparable assessments

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

  • 846 Forest Ave, Oak Park, IL 60302
    3,593 sqft | $320/sqft | built 2001 | 9% smaller (3,593 vs 3,930 sqft); Similar lot size (10,892 vs 10,440 sqft); Same quality (Average)
    $1,148,480
  • 534 N Marion St, Oak Park, IL 60302
    4,106 sqft | $351/sqft | built 2005 | Similar size (4,106 vs 3,930 sqft); Lot 16% smaller (8,785 vs 10,440 sqft); Same quality (Average)
    $1,440,010
  • 833 Woodbine Ave, Oak Park, IL 60302
    3,595 sqft | $337/sqft | built 2010 | 8% smaller (3,595 vs 3,930 sqft); Similar age (2010 vs 2011); Lot 14% smaller (8,950 vs 10,440 sqft)
    $1,210,000
  • 827 Belleforte Ave, Oak Park, IL 60302
    3,482 sqft | $379/sqft | built 2008 | 11% smaller (3,482 vs 3,930 sqft); Similar age (2008 vs 2011); Lot 12% smaller (9,222 vs 10,440 sqft)
    $1,320,000
  • 707 N Grove Ave, Oak Park, IL 60302
    4,009 sqft | $347/sqft | built 2001 | Similar size (4,009 vs 3,930 sqft); Same quality (Average); Same bed/bath (4/3)
    $1,390,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

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 34.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,340,760+$344,370+34.6%
2025$996,390$00.0%
2024$996,390−$127,530−11.3%
2023$1,123,920+$338,360+43.1%
2022$785,560$00.0%
2021$785,560−$35,630−4.3%
2020$821,190——
6-year total+$519,570+63.3%