Cook County Value

409 N Grove Ave, Oak Park, IL 60302

3 bed / 1 bath, 2,561 sqft, built 1884, in Oak Park. Assessor market value for 2026: $940,000.

Cook County account 16071040250000

In line with similar homes

8 similar homes nearby support a value at or above your county value.

Assessor market value$940,000
Similar homes$985,370
No gap: similar homes are at or above the county value · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$940,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,561 sqft
$367 per sqft
Year built
1884
Average quality

What we found

Similar homes' assessments

Weak

1 of 8 similar homes is assessed lower per square foot. Their similarity-weighted median is $374.15/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $196,520. Counting your land in place of theirs where theirs is less, they support a value of $985,370.

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 17.5% from $800,000 in 2025 to $940,000 in 2026.
  • Assessor market value per square footThe current public record shows about $367 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 535 residential records in the same neighborhood, the average assessor market value is about $409 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +27.9% on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 339 N Grove Ave, Oak Park, IL 60302
    2,556 sqft | $368/sqft | built 1887 | Similar size (2,556 vs 2,561 sqft); Similar age (1887 vs 1884); Lot 20% smaller (8,758 vs 10,918 sqft)
    $940,000
  • 305 Forest Ave, Oak Park, IL 60302
    2,685 sqft | $395/sqft | built 1894 | Similar size (2,685 vs 2,561 sqft); Similar lot size (10,834 vs 10,918 sqft); Same quality (Average)
    $1,060,000
  • 3 Elizabeth Ct, Oak Park, IL 60302
    2,646 sqft | $374/sqft | built 1882 | Similar size (2,646 vs 2,561 sqft); Similar age (1882 vs 1884); Lot 11% smaller (9,720 vs 10,918 sqft)
    $990,000
  • 219 Forest Ave, Oak Park, IL 60302
    2,751 sqft | $385/sqft | built 1883 | 7% larger (2,751 vs 2,561 sqft); Similar age (1883 vs 1884); Lot 11% smaller (9,750 vs 10,918 sqft)
    $1,060,000
  • 925 Chicago Ave, Oak Park, IL 60302
    2,310 sqft | $368/sqft | built 1889 | 10% smaller (2,310 vs 2,561 sqft); Similar age (1889 vs 1884); Similar lot size (11,000 vs 10,918 sqft)
    $850,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 622 N Ridgeland Ave, Oak Park, IL 60302
    June-26-2026 | 2,477 sqft | $353/sqft | built 1893 | Similar size (2,477 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $875,000

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 17.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$940,000+$140,000+17.5%
2025$800,000$00.0%
2024$800,000$00.0%
2023$800,000+$80,070+11.1%
2022$719,930$00.0%
2021$719,930+$200.0%
2020$719,910——
6-year total+$220,090+30.6%