Cook County Value

900 N Marion St, Oak Park, IL 60302

4 bed / 1 bath, 2,363 sqft, built 1941, in Oak Park. Assessor market value for 2026: $824,880.

Cook County account 16061210120000

Assessor market value
$824,880
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,363 sqft
$349 per sqft
Year built
1941
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 20.0% from $687,320 in 2025 to $824,880 in 2026.
  • Assessor market value per square footThe current public record shows about $349 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

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

  • 1115 Woodbine Ave, Oak Park, IL 60302
    2,319 sqft | $351/sqft | built 1937 | Similar size (2,319 vs 2,363 sqft); Similar age (1937 vs 1941); Similar lot size (8,950 vs 9,034 sqft)
    $815,060
  • 1021 Forest Ave, Oak Park, IL 60302
    2,369 sqft | $331/sqft | built 1944 | Similar size (2,369 vs 2,363 sqft); Similar age (1944 vs 1941); Similar lot size (8,300 vs 9,034 sqft)
    $782,970
  • 939 Forest Ave, Oak Park, IL 60302
    2,309 sqft | $329/sqft | built 1936 | Similar size (2,309 vs 2,363 sqft); Similar age (1936 vs 1941); Similar lot size (8,700 vs 9,034 sqft)
    $760,000
  • 1226 Belleforte Ave, Oak Park, IL 60302
    2,315 sqft | $328/sqft | built 1939 | Similar size (2,315 vs 2,363 sqft); Similar age (1939 vs 1941); Similar lot size (8,350 vs 9,034 sqft)
    $760,000
  • 1044 N Marion St, Oak Park, IL 60302
    2,418 sqft | $347/sqft | built 1948 | Similar size (2,418 vs 2,363 sqft); Similar lot size (9,275 vs 9,034 sqft); Same quality (Average)
    $840,000

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 20.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$824,880+$137,560+20.0%
2025$687,320−$12,680−1.8%
2024$700,000$00.0%
2023$700,000+$258,210+58.4%
2022$441,790$00.0%
2021$441,790−$117,260−21.0%
2020$559,050——
6-year total+$265,830+47.6%