Cook County Value

819 S Grove Ave, Oak Park, IL 60304

5 bed / 3 bath, 1,488 sqft, built 1916, in Oak Park. Assessor market value for 2026: $475,060.

Cook County account 16181330190000

Assessor market value
$475,060
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,488 sqft
$319 per sqft
Year built
1916
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 27.5% from $372,520 in 2025 to $475,060 in 2026.
  • Assessor market value per square footThe current public record shows about $319 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.

  • 837 Wesley Ave, Oak Park, IL 60304
    1,488 sqft | $302/sqft | built 1918 | Similar size (1,488 vs 1,488 sqft); Similar age (1918 vs 1916); Similar lot size (3,780 vs 3,750 sqft)
    $450,000
  • 605 Home Ave, Oak Park, IL 60304
    1,518 sqft | $382/sqft | built 1914 | Similar size (1,518 vs 1,488 sqft); Similar age (1914 vs 1916); Similar lot size (3,750 vs 3,750 sqft)
    $580,000
  • 815 Wesley Ave, Oak Park, IL 60304
    1,470 sqft | $332/sqft | built 1919 | Similar size (1,470 vs 1,488 sqft); Similar age (1919 vs 1916); Similar lot size (3,780 vs 3,750 sqft)
    $488,460
  • 844 S East Ave, Oak Park, IL 60304
    1,462 sqft | $315/sqft | built 1911 | Similar size (1,462 vs 1,488 sqft); Similar age (1911 vs 1916); Similar lot size (3,680 vs 3,750 sqft)
    $460,000
  • 863 S Grove Ave, Oak Park, IL 60304
    1,481 sqft | $297/sqft | built 1914 | Similar size (1,481 vs 1,488 sqft); Similar age (1914 vs 1916); Similar lot size (3,500 vs 3,750 sqft)
    $440,000

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 27.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$475,060+$102,540+27.5%
2025$372,520$00.0%
2024$372,520$00.0%
2023$372,520+$45,460+13.9%
2022$327,060$00.0%
2021$327,060−$13,120−3.9%
2020$340,180——
6-year total+$134,880+39.6%