Cook County Value

431 Lenox St, Oak Park, IL 60302

3 bed / 2 bath, 1,671 sqft, built 1926, in Oak Park. Assessor market value for 2026: $633,350.

Cook County account 16062230090000

Assessor market value
$633,350
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,671 sqft
$379 per sqft
Year built
1926
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 17.3% from $540,000 in 2025 to $633,350 in 2026.
  • Assessor market value per square footThe current public record shows about $379 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.

  • 459 Lenox St 3, Oak Park, IL 60302
    1,724 sqft | $400/sqft | built 1926 | Similar size (1,724 vs 1,671 sqft); Built same year (1926); Similar lot size (7,100 vs 7,050 sqft)
    $690,000
  • 427 Lenox St, Oak Park, IL 60302
    1,715 sqft | $383/sqft | built 1924 | Similar size (1,715 vs 1,671 sqft); Similar age (1924 vs 1926); Similar lot size (7,050 vs 7,050 sqft)
    $657,520
  • 916 Belleforte Ave, Oak Park, IL 60302
    1,585 sqft | $389/sqft | built 1927 | 5% smaller (1,585 vs 1,671 sqft); Similar age (1927 vs 1926); Similar lot size (6,960 vs 7,050 sqft)
    $616,630
  • 923 Belleforte Ave, Oak Park, IL 60302
    1,683 sqft | $362/sqft | built 1925 | Similar size (1,683 vs 1,671 sqft); Similar age (1925 vs 1926); Similar lot size (7,482 vs 7,050 sqft)
    $610,000
  • 1229 N Elmwood Ave, Oak Park, IL 60302
    1,695 sqft | $324/sqft | built 1927 | Similar size (1,695 vs 1,671 sqft); Similar age (1927 vs 1926); Lot 11% smaller (6,280 vs 7,050 sqft)
    $550,000

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 17.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$633,350+$93,350+17.3%
2025$540,000$00.0%
2024$540,000$00.0%
2023$540,000+$88,530+19.6%
2022$451,470$00.0%
2021$451,470+$100.0%
2020$451,460——
6-year total+$181,890+40.3%