Cook County Value

1108 Blackthorn Ln, Northbrook, IL 60062

5 bed / 4 bath, 3,114 sqft, built 2007, in Northfield. Assessor market value for 2026: $1,178,090.

Cook County account 04092020250000

Assessor market value
$1,178,090
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,114 sqft
$378 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 decreased 14.6% from $1,380,000 in 2025 to $1,178,090 in 2026.
  • Assessor market value per square footThe current public record shows about $378 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 2,200 residential records in the same neighborhood, the average assessor market value is about $346 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.0% on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 2210 Center St, Northbrook, IL 60062
    3,216 sqft | $398/sqft | built 2006 | Similar size (3,216 vs 3,114 sqft); Similar age (2006 vs 2007); Similar lot size (7,990 vs 7,936 sqft)
    $1,280,000
  • 2129 Henley St, Glenview, IL 60025
    3,065 sqft | $427/sqft | built 2007 | Similar size (3,065 vs 3,114 sqft); Built same year (2007); Lot 10% larger (8,750 vs 7,936 sqft)
    $1,310,110
  • 2024 Maple Ave, Northbrook, IL 60062
    3,091 sqft | $388/sqft | built 2005 | Similar size (3,091 vs 3,114 sqft); Similar age (2005 vs 2007); Similar lot size (8,415 vs 7,936 sqft)
    $1,200,010
  • 1032 Blackthorn Ln, Northbrook, IL 60062
    3,194 sqft | $389/sqft | built 2009 | Similar size (3,194 vs 3,114 sqft); Similar age (2009 vs 2007); Similar lot size (8,184 vs 7,936 sqft)
    $1,243,060
  • 1031 Blackthorn Ln, Northbrook, IL 60062
    3,030 sqft | $389/sqft | built 2008 | Similar size (3,030 vs 3,114 sqft); Similar age (2008 vs 2007); Similar lot size (7,620 vs 7,936 sqft)
    $1,178,920

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 14.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,178,090−$201,910−14.6%
2025$1,380,000+$506,280+57.9%
2024$873,720——
2-year total+$304,370+34.8%