Cook County Value

1140 N Grove Ave, Oak Park, IL 60302

4 bed / 2 bath, 2,978 sqft, built 1997, in Oak Park. Assessor market value for 2026: $930,000.

Cook County account 16061120020000

Assessor market value
$930,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,978 sqft
$312 per sqft
Year built
1997
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 12.0% from $830,000 in 2025 to $930,000 in 2026.
  • Assessor market value per square footThe current public record shows about $312 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 1,293 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 +18.7% on average.

Comparable assessments

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

  • 1134 N East Ave, Oak Park, IL 60302
    3,090 sqft | $333/sqft | built 1999 | Similar size (3,090 vs 2,978 sqft); Similar age (1999 vs 1997); Similar lot size (7,800 vs 8,150 sqft)
    $1,030,000
  • 1135 N Grove Ave, Oak Park, IL 60302
    3,067 sqft | $352/sqft | built 2009 | Similar size (3,067 vs 2,978 sqft); Similar lot size (8,000 vs 8,150 sqft); Same quality (Average)
    $1,079,440
  • 939 Belleforte Ave, Oak Park, IL 60302
    3,178 sqft | $334/sqft | built 2001 | 7% larger (3,178 vs 2,978 sqft); Similar age (2001 vs 1997); Lot 17% larger (9,570 vs 8,150 sqft)
    $1,060,000
  • 1110 Edmer Ave, Oak Park, IL 60302
    3,161 sqft | $323/sqft | built 2001 | 6% larger (3,161 vs 2,978 sqft); Similar age (2001 vs 1997); Lot 17% smaller (6,800 vs 8,150 sqft)
    $1,020,000
  • 1101 N Oak Park Ave, Oak Park, IL 60302
    3,278 sqft | $311/sqft | built 1987 | 10% larger (3,278 vs 2,978 sqft); Similar lot size (8,229 vs 8,150 sqft); Same quality (Average)
    $1,020,000

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 12.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$930,000+$100,000+12.0%
2025$830,000$00.0%
2024$830,000$00.0%
2023$830,000+$142,440+20.7%
2022$687,560$00.0%
2021$687,560+$200.0%
2020$687,540——
6-year total+$242,460+35.3%