Cook County Value

270 Avon Ave Northfield, IL 60093

4 bed / 2 bath, 1,766 sqft, built 1961, in Northfield. Assessor market value for 2026: $552,890.

Cook County account 04244110320000

Assessor market value
$552,890
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,766 sqft
$313 per sqft
Year built
1961
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 decreased 2.0% from $564,190 in 2025 to $552,890 in 2026.
  • Assessor market value per square footThe current public record shows about $313 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.

  • 242 Bristol St Northfield, IL 60093
    1,806 sqft | $334/sqft | built 1957 | Similar size (1,806 vs 1,766 sqft); Similar age (1957 vs 1961); Similar lot size (8,117 vs 8,250 sqft)
    $603,060
  • 1890 Stockton Dr Northfield, IL 60093
    1,731 sqft | $343/sqft | built 1960 | Similar size (1,731 vs 1,766 sqft); Similar age (1960 vs 1961); Similar lot size (7,933 vs 8,250 sqft)
    $593,290
  • 255 Jeffery Ln Northfield, IL 60093
    1,784 sqft | $331/sqft | built 1965 | Similar size (1,784 vs 1,766 sqft); Similar age (1965 vs 1961); Similar lot size (8,580 vs 8,250 sqft)
    $590,580
  • 1869 Winnetka Ave Northfield, IL 60093
    1,772 sqft | $378/sqft | built 1960 | Similar size (1,772 vs 1,766 sqft); Similar age (1960 vs 1961); Similar lot size (7,502 vs 8,250 sqft)
    $670,000
  • 257 Dickens Rd Northfield, IL 60093
    1,825 sqft | $334/sqft | built 1953 | Similar size (1,825 vs 1,766 sqft); Similar lot size (8,250 vs 8,250 sqft); Same quality (Average)
    $610,000

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 2.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$552,890−$11,300−2.0%
2025$564,190+$117,190+26.2%
2024$447,000$00.0%
2023$447,000−$33,000−6.9%
2022$480,000+$123,160+34.5%
2021$356,840+$10,000+2.9%
2020$346,840——
6-year total+$206,050+59.4%