Cook County Value

809 N Marion St, Oak Park, IL 60302

4 bed / 3 bath, 1,759 sqft, built 1929, in Oak Park. Assessor market value for 2026: $700,010.

Cook County account 16063000210000

Assessor market value
$700,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,759 sqft
$398 per sqft
Year built
1929
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 53.5% from $456,080 in 2025 to $700,010 in 2026.
  • Assessor market value per square footThe current public record shows about $398 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 1,390 residential records in the same neighborhood, the average assessor market value is about $323 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +22.6% on average.

Comparable assessments

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

  • 847 N Grove Ave, Oak Park, IL 60302
    1,810 sqft | $320/sqft | built 1924 | Similar size (1,810 vs 1,759 sqft); Similar age (1924 vs 1929); Similar lot size (4,880 vs 4,935 sqft)
    $580,000
  • 745 Woodbine Ave, Oak Park, IL 60302
    1,696 sqft | $331/sqft | built 1924 | Similar size (1,696 vs 1,759 sqft); Similar age (1924 vs 1929); Similar lot size (5,296 vs 4,935 sqft)
    $560,770
  • 746 Forest Ave, Oak Park, IL 60302
    1,775 sqft | $315/sqft | built 1944 | Similar size (1,775 vs 1,759 sqft); Similar lot size (4,960 vs 4,935 sqft); Same quality (Average)
    $560,000
  • 800 Forest Ave, Oak Park, IL 60302
    1,664 sqft | $337/sqft | built 1923 | 5% smaller (1,664 vs 1,759 sqft); Similar lot size (4,844 vs 4,935 sqft); Same quality (Average)
    $560,000
  • 740 N Grove Ave, Oak Park, IL 60302
    1,850 sqft | $358/sqft | built 1925 | 5% larger (1,850 vs 1,759 sqft); Similar age (1925 vs 1929); Similar lot size (5,379 vs 4,935 sqft)
    $663,090

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 53.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$700,010+$243,930+53.5%
2025$456,080−$28,310−5.8%
2024$484,390−$31,780−6.2%
2023$516,170+$95,650+22.7%
2022$420,520$00.0%
2021$420,520−$27,330−6.1%
2020$447,850——
6-year total+$252,160+56.3%