Cook County Value

427 Helen Rd, Palatine, IL 60067

4 bed / 2 bath, 2,167 sqft, built 1955, in Palatine. Assessor market value for 2025: $490,000.

Cook County account 02221170140000

Assessor market value
$490,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,167 sqft
$226 per sqft
Year built
1955
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 60067 and Palatine assessment pages.

Appeal deadlines

For Palatine, appeals to the Assessor are open through (16 days left).

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 $490,000 in 2024 to $490,000 in 2025.
  • Assessor market value per square footThe current public record shows about $226 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Palatine neighborhood and ZIP 60067.
  • Neighborhood value signalAmong 2,438 residential records in the same neighborhood, the average assessor market value is about $253 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

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

  • 79 S Clyde Ave, Palatine, IL 60067
    2,138 sqft | $257/sqft | built 1958 | Similar size (2,138 vs 2,167 sqft); Similar age (1958 vs 1955); Similar lot size (14,025 vs 13,674 sqft)
    $550,010
  • 202 S Elmwood Ave, Palatine, IL 60074
    2,144 sqft | $210/sqft | built 1947 | Similar size (2,144 vs 2,167 sqft); Similar lot size (13,680 vs 13,674 sqft); Same quality (Average)
    $450,000
  • 429 S Plum Grove Rd, Palatine, IL 60067
    2,246 sqft | $196/sqft | built 1962 | Similar size (2,246 vs 2,167 sqft); Similar lot size (13,500 vs 13,674 sqft); Same quality (Average)
    $440,000
  • 238 N Oak St, Palatine, IL 60067
    2,082 sqft | $130/sqft | built 1951 | Similar size (2,082 vs 2,167 sqft); Similar age (1951 vs 1955); Similar lot size (13,517 vs 13,674 sqft)
    $269,900
  • 178 Imperial Ct, Palatine, IL 60067
    2,126 sqft | $226/sqft | built 1967 | Similar size (2,126 vs 2,167 sqft); Similar lot size (14,100 vs 13,674 sqft); Same quality (Average)
    $480,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

Public appraisal comparison for 2025. 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

Up 48.3% in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$490,000+$159,510+48.3%
2024$330,490$00.0%
2023$330,490−$59,510−15.3%
2022$390,000+$106,110+37.4%
2021$283,890+$200.0%
2020$283,870——
5-year total+$206,130+72.6%