Cook County Value

257 Jeffery Ln Northfield, IL 60093

3 bed / 3 bath, 3,311 sqft, built 2010, in Northfield. Assessor market value for 2026: $1,240,000.

Cook County account 04243050300000

Assessor market value
$1,240,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,311 sqft
$375 per sqft
Year built
2010
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 60093 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 $1,240,000 in 2025 to $1,240,000 in 2026.
  • Assessor market value per square footThe current public record shows about $375 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 60093.
  • Neighborhood value signalAmong 602 residential records in the same neighborhood, the average assessor market value is about $313 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -0.9% on average.

Comparable assessments

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

  • 350 Wagner Rd Northfield, IL 60093
    3,187 sqft | $427/sqft | built 2022 | Similar size (3,187 vs 3,311 sqft); Similar lot size (9,675 vs 9,900 sqft); Same quality (Average)
    $1,360,010
  • 327 Ingram St Northfield, IL 60093
    3,149 sqft | $432/sqft | built 2003 | Similar size (3,149 vs 3,311 sqft); Similar lot size (10,560 vs 9,900 sqft); Same quality (Average)
    $1,360,000
  • 326 Ingram St Northfield, IL 60093
    3,121 sqft | $424/sqft | built 2009 | 6% smaller (3,121 vs 3,311 sqft); Similar age (2009 vs 2010); Similar lot size (10,560 vs 9,900 sqft)
    $1,321,890
  • 262 Graemere St Northfield, IL 60093
    3,169 sqft | $398/sqft | built 2000 | Similar size (3,169 vs 3,311 sqft); Lot 11% larger (11,000 vs 9,900 sqft); Same quality (Average)
    $1,260,000
  • 257 Wagner Rd Northfield, IL 60093
    2,916 sqft | $460/sqft | built 2019 | 12% smaller (2,916 vs 3,311 sqft); Similar lot size (10,000 vs 9,900 sqft); Same quality (Average)
    $1,340,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 2404 Fox Meadow Ln Northfield, IL 60093
    3,274 sqft | $521/sqft | built 2000 | Similar size (3,274 sqft); Moderate age difference (10 years older); Same beds (3)
    $1,706,500
  • 358 Winnetka Ave, IL 60093
    3,631 sqft | $826/sqft | built 2004 | 10% size difference (3,631 sqft); Moderate age difference (6 years older); Within 1 bedroom (4 vs 3)
    $3,000,000

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$1,240,000$00.0%
2025$1,240,000+$422,310+51.6%
2024$817,690$00.0%
2023$817,690−$292,310−26.3%
2022$1,110,000+$281,220+33.9%
2021$828,780+$100.0%
2020$828,770——
6-year total+$411,230+49.6%