Cook County Value

1380 Rosemary Ln, Northbrook, IL 60062

6 bed / 6 bath, 9,940 sqft, built 2007, in Northfield. Assessor market value for 2026: $2,750,000.

Cook County account 04034010170000

Assessor market value
$2,750,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
9,940 sqft
$277 per sqft
Year built
2007
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 $2,750,000 in 2025 to $2,750,000 in 2026.
  • Assessor market value per square footThe current public record shows about $277 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 36 residential records in the same neighborhood, the average assessor market value is about $299 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +4.5% on average.

Comparable assessments

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

  • 2893 Highland Rd, Northbrook, IL 60062
    9,485 sqft | $282/sqft | built 2006 | Similar size (9,485 vs 9,940 sqft); Similar age (2006 vs 2007); Similar lot size (42,029 vs 42,889 sqft)
    $2,670,000
  • 2204 Martin Ln Northfield, IL 60093
    10,017 sqft | $312/sqft | built 2006 | Similar size (10,017 vs 9,940 sqft); Similar age (2006 vs 2007); Similar lot size (43,522 vs 42,889 sqft)
    $3,130,000
  • 4140 Sunset Ln, Northbrook, IL 60062
    10,330 sqft | $238/sqft | built 2009 | Similar size (10,330 vs 9,940 sqft); Similar age (2009 vs 2007); Similar lot size (45,164 vs 42,889 sqft)
    $2,460,000
  • 2202 Martin Ln Northfield, IL 60093
    10,915 sqft | $290/sqft | built 2007 | 10% larger (10,915 vs 9,940 sqft); Built same year (2007); Similar lot size (43,711 vs 42,889 sqft)
    $3,160,280
  • 925 Morrison Ln, Northbrook, IL 60062
    8,758 sqft | $279/sqft | built 2010 | 12% smaller (8,758 vs 9,940 sqft); Similar age (2010 vs 2007); Similar lot size (39,640 vs 42,889 sqft)
    $2,440,000

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. 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

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$2,750,000$00.0%
2025$2,750,000+$979,990+55.4%
2024$1,770,010$00.0%
2023$1,770,010$00.0%
2022$1,770,010+$376,610+27.0%
2021$1,393,400$00.0%
2020$1,393,400——
6-year total+$1,356,600+97.4%