Cook County Value

8831 Olcott Ave, Morton Grove, IL 60053

4 bed / 2 bath, 1,467 sqft, built 1956, in Leyden. Assessor market value for 2026: $372,560.

Cook County account 09134190030000

Assessor market value
$372,560
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,467 sqft
$254 per sqft
Year built
1956
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 60053 and Leyden assessment pages.

Local guide: Maine Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for Maine 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 decreased 13.4% from $430,000 in 2025 to $372,560 in 2026.
  • Assessor market value per square footThe current public record shows about $254 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Leyden neighborhood and ZIP 60053.
  • Neighborhood value signalAmong 4,336 residential records in the same neighborhood, the average assessor market value is about $284 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.5% on average.

Comparable assessments

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

  • 9424 Oketo Ave, Morton Grove, IL 60053
    1,465 sqft | $348/sqft | built 1956 | Similar size (1,465 vs 1,467 sqft); Built same year (1956); Similar lot size (7,500 vs 7,150 sqft)
    $510,000
  • 9418 Oketo Ave, Morton Grove, IL 60053
    1,451 sqft | $303/sqft | built 1956 | Similar size (1,451 vs 1,467 sqft); Built same year (1956); Similar lot size (7,500 vs 7,150 sqft)
    $440,000
  • 7824 N Oconto Ave, Niles, IL 60714
    1,472 sqft | $251/sqft | built 1955 | Similar size (1,472 vs 1,467 sqft); Similar age (1955 vs 1956); Similar lot size (6,768 vs 7,150 sqft)
    $370,000
  • 8718 N Osceola Ave, Niles, IL 60714
    1,477 sqft | $264/sqft | built 1957 | Similar size (1,477 vs 1,467 sqft); Similar age (1957 vs 1956); Similar lot size (6,968 vs 7,150 sqft)
    $390,000
  • 7542 Lyons St, Morton Grove, IL 60053
    1,469 sqft | $286/sqft | built 1956 | Similar size (1,469 vs 1,467 sqft); Built same year (1956); Similar lot size (7,500 vs 7,150 sqft)
    $420,000

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

Down 13.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$372,560−$57,440−13.4%
2025$430,000+$129,830+43.3%
2024$300,170−$49,140−14.1%
2023$349,310−$20,690−5.6%
2022$370,000+$86,280+30.4%
2021$283,720+$100.0%
2020$283,710——
6-year total+$88,850+31.3%