Cook County Value

2051 Mallard Dr, Northbrook, IL 60062

5 bed / 2 bath, 3,656 sqft, built 1985, in Northfield. Assessor market value for 2026: $1,017,680.

Cook County account 04164000450000

Assessor market value
$1,017,680
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,656 sqft
$278 per sqft
Year built
1985
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 decreased 4.9% from $1,070,000 in 2025 to $1,017,680 in 2026.
  • Assessor market value per square footThe current public record shows about $278 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 2,922 residential records in the same neighborhood, the average assessor market value is about $298 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.8% on average.

Comparable assessments

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

  • 1436 Kingsport Ct, Northbrook, IL 60062
    3,726 sqft | $250/sqft | built 1989 | Similar size (3,726 vs 3,656 sqft); Similar age (1989 vs 1985); Similar lot size (12,104 vs 12,274 sqft)
    $930,000
  • 2445 Vicki Ln, Northbrook, IL 60062
    3,718 sqft | $258/sqft | built 1986 | Similar size (3,718 vs 3,656 sqft); Similar age (1986 vs 1985); Similar lot size (12,039 vs 12,274 sqft)
    $960,010
  • 1444 Kingsport Ct, Northbrook, IL 60062
    3,722 sqft | $258/sqft | built 1988 | Similar size (3,722 vs 3,656 sqft); Similar age (1988 vs 1985); Similar lot size (12,180 vs 12,274 sqft)
    $960,000
  • 3084 Palm Ln, Northbrook, IL 60062
    3,624 sqft | $259/sqft | built 1986 | Similar size (3,624 vs 3,656 sqft); Similar age (1986 vs 1985); Similar lot size (11,694 vs 12,274 sqft)
    $940,000
  • 2121 Mallard Dr, Northbrook, IL 60062
    3,622 sqft | $265/sqft | built 1981 | Similar size (3,622 vs 3,656 sqft); Similar age (1981 vs 1985); Similar lot size (12,000 vs 12,274 sqft)
    $960,000

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

Down 4.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,017,680−$52,320−4.9%
2025$1,070,000+$331,260+44.8%
2024$738,740——
2-year total+$278,940+37.8%