Cook County Value

137 S Grove Ave, Oak Park, IL 60302

5 bed / 3 bath, 2,785 sqft, built 1909, in Oak Park Assessor market value for 2026: $1,110,000.

Cook County account 16073050210000

Assessor market value
$1,110,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,785 sqft
$399 per sqft
Year built
1909

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 changed from $644,110 in 2025 to $1,110,000 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
  • Assessor market value per square footThe current public record shows about $399 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 513 residential records in the same neighborhood, the average assessor market value is about $269 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +24.8% on average.

Comparable assessments

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

  • 314 S Kenilworth Ave, Oak Park, IL 60302
    2,594 sqft | $366/sqft | built 1913 | 7% smaller (2,594 vs 2,785 sqft); Similar age (1913 vs 1909); Similar lot size (5,640 vs 5,640 sqft)
    $950,000
  • 304 Home Ave, Oak Park, IL 60302
    2,596 sqft | $258/sqft | built 1913 | 7% smaller (2,596 vs 2,785 sqft); Similar age (1913 vs 1909); Similar lot size (5,760 vs 5,640 sqft)
    $670,000
  • 310 S Kenilworth Ave, Oak Park, IL 60302
    2,678 sqft | $224/sqft | built 1910 | Similar size (2,678 vs 2,785 sqft); Similar age (1910 vs 1909); Lot 12% smaller (4,935 vs 5,640 sqft)
    $600,000
  • 313 S Maple Ave, Oak Park, IL 60302
    2,714 sqft | $206/sqft | built 1904 | Similar size (2,714 vs 2,785 sqft); Similar age (1904 vs 1909); Lot 19% smaller (4,590 vs 5,640 sqft)
    $560,000
  • 138 S Grove Ave, Oak Park, IL 60302
    2,490 sqft | $361/sqft | built 1913 | 11% smaller (2,490 vs 2,785 sqft); Similar age (1913 vs 1909); Similar lot size (5,217 vs 5,640 sqft)
    $898,650

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 72.3% 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+$465,890+72.3%
2025$644,110−$42,330−6.2%
2024$686,440−$83,560−10.9%
2023$770,000+$279,330+56.9%
2022$490,670$00.0%
2021$490,670−$51,480−9.5%
2020$542,150——
6-year total+$567,850+104.7%