Cook County Value

1133 Jeffery Ct Northbrook

4 bed / 3 bath, 3,102 sqft, built 1960, in Northfield. Assessor market value for 2026: $977,500.

Cook County account 04102010450000

Assessor market value
$977,500
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,102 sqft
$315 per sqft
Year built
1960
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 Northfield assessment pages.

Local guide: Northfield Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Northfield, appeals to the Assessor closed . Board of Review dates for Northfield have not been published yet.

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 8.6% from $1,070,000 in 2025 to $977,500 in 2026.
  • Assessor market value per square footThe current public record shows about $315 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Northfield neighborhood.
  • Neighborhood value signalAmong 556 residential records in the same neighborhood, the average assessor market value is about $331 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.0% on average.

Comparable assessments

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

  • 1224 Ridgewood Dr, Northbrook, IL 60062
    3,036 sqft | $339/sqft | built 1955 | Similar size (3,036 vs 3,102 sqft); Similar age (1955 vs 1960); Similar lot size (13,500 vs 13,055 sqft)
    $1,030,000
  • 1443 Orchard Ln, Northbrook, IL 60062
    3,052 sqft | $311/sqft | built 1964 | Similar size (3,052 vs 3,102 sqft); Similar age (1964 vs 1960); Similar lot size (12,002 vs 13,055 sqft)
    $950,000
  • 1435 Woodhill Dr, Northbrook, IL 60062
    3,128 sqft | $274/sqft | built 1968 | Similar size (3,128 vs 3,102 sqft); Similar lot size (12,200 vs 13,055 sqft); Same quality (Average)
    $858,650
  • 1546 Elm Ave, Northbrook, IL 60062
    2,999 sqft | $297/sqft | built 1965 | Similar size (2,999 vs 3,102 sqft); Similar age (1965 vs 1960); Similar lot size (12,150 vs 13,055 sqft)
    $891,660
  • 1243 Glenoak Ln, Northbrook, IL 60062
    3,329 sqft | $178/sqft | built 1961 | 7% larger (3,329 vs 3,102 sqft); Similar age (1961 vs 1960); Similar lot size (13,500 vs 13,055 sqft)
    $593,800

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. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Down 8.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$977,500−$92,500−8.6%
2025$1,070,000+$355,250+49.7%
2024$714,750−$75,060−9.5%
2023$789,810−$70,200−8.2%
2022$860,010——
4-year total+$117,490+13.7%