Cook County Value

818 N Grove Ave, Oak Park, IL 60302

5 bed / 2 bath, 3,270 sqft, built 1909, in Oak Park. Assessor market value for 2026: $1,110,000.

Cook County account 16063060090000

Assessor market value
$1,110,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,270 sqft
$339 per sqft
Year built
1909
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 48.6% from $746,940 in 2025 to $1,110,000 in 2026.
  • Assessor market value per square footThe current public record shows about $339 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.

  • 733 N Kenilworth Ave, Oak Park, IL 60302
    3,309 sqft | $230/sqft | built 1906 | Similar size (3,309 vs 3,270 sqft); Similar age (1906 vs 1909); Similar lot size (8,320 vs 8,231 sqft)
    $760,000
  • 814 N Grove Ave, Oak Park, IL 60302
    3,340 sqft | $374/sqft | built 1911 | Similar size (3,340 vs 3,270 sqft); Similar age (1911 vs 1909); Similar lot size (8,150 vs 8,231 sqft)
    $1,250,000
  • 400 N Elmwood Ave, Oak Park, IL 60302
    3,238 sqft | $340/sqft | built 1908 | Similar size (3,238 vs 3,270 sqft); Similar age (1908 vs 1909); Similar lot size (8,600 vs 8,231 sqft)
    $1,100,000
  • 155 N Elmwood Ave, Oak Park, IL 60302
    3,156 sqft | $320/sqft | built 1907 | Similar size (3,156 vs 3,270 sqft); Similar age (1907 vs 1909); Similar lot size (8,600 vs 8,231 sqft)
    $1,010,000
  • 308 N Elmwood Ave, Oak Park, IL 60302
    3,279 sqft | $357/sqft | built 1908 | Similar size (3,279 vs 3,270 sqft); Similar age (1908 vs 1909); Similar lot size (8,600 vs 8,231 sqft)
    $1,170,000

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: . 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 48.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,110,000+$363,060+48.6%
2025$746,940−$96,140−11.4%
2024$843,080−$46,920−5.3%
2023$890,000+$265,970+42.6%
2022$624,030$00.0%
2021$624,030+$100.0%
2020$624,020——
6-year total+$485,980+77.9%