Cook County Value

1881 Big Oak Cir, Northbrook, IL 60062

3 bed / 1 bath, 1,798 sqft, built 1958, in Northfield. Assessor market value for 2026: $510,000.

Cook County account 04101000230000

Assessor market value
$510,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,798 sqft
$284 per sqft
Year built
1958
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 60062 and 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 stayed about the same, from $510,000 in 2025 to $510,000 in 2026.
  • Assessor market value per square footThe current public record shows about $284 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Northfield neighborhood and ZIP 60062.
  • Neighborhood value signalAmong 1,572 residential records in the same neighborhood, the average assessor market value is about $309 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -0.3% on average.

Comparable assessments

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

  • 1081 Cedar Ln, Northbrook, IL 60062
    1,784 sqft | $311/sqft | built 1961 | Similar size (1,784 vs 1,798 sqft); Similar age (1961 vs 1958); Similar lot size (12,600 vs 11,992 sqft)
    $555,330
  • 603 Gregg Rd, Northbrook, IL 60062
    1,792 sqft | $262/sqft | built 1955 | Similar size (1,792 vs 1,798 sqft); Similar age (1955 vs 1958); Similar lot size (13,172 vs 11,992 sqft)
    $470,000
  • 1798 Shermer Rd, Northbrook, IL 60062
    1,799 sqft | $317/sqft | built 1966 | Similar size (1,799 vs 1,798 sqft); Similar lot size (12,026 vs 11,992 sqft); Same quality (Average)
    $570,010
  • 2011 Brentwood Ln, Northbrook, IL 60062
    1,750 sqft | $321/sqft | built 1965 | Similar size (1,750 vs 1,798 sqft); Similar lot size (12,013 vs 11,992 sqft); Same quality (Average)
    $561,940
  • 1998 Big Oak Ln, Northbrook, IL 60062
    1,723 sqft | $261/sqft | built 1956 | Similar size (1,723 vs 1,798 sqft); Similar age (1956 vs 1958); Similar lot size (11,665 vs 11,992 sqft)
    $450,000

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

Value history

No change in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$510,000$00.0%
2025$510,000+$10,000+2.0%
2024$500,000$00.0%
2023$500,000$00.0%
2022$500,000+$136,710+37.6%
2021$363,290+$100.0%
2020$363,280——
6-year total+$146,720+40.4%