Cook County Value

1143 S Belmont Ave, Arlington Heights, IL 60005

4 bed / 2 bath, 2,378 sqft, built 2001, in Elk Grove. Assessor market value for 2026: $594,500.

Cook County account 08101060110000

Assessor market value
$594,500
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,378 sqft
$250 per sqft
Year built
2001
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 60005 and Elk Grove assessment pages.

Local guide: Elk Grove Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for Elk Grove have closed (Assessor , Board of Review ). 2027 notices usually start in March.

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 8.5% from $650,000 in 2025 to $594,500 in 2026.
  • Assessor market value per square footThe current public record shows about $250 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Elk Grove neighborhood and ZIP 60005.
  • Neighborhood value signalAmong 1,607 residential records in the same neighborhood, the average assessor market value is about $281 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.6% on average.

Comparable assessments

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

  • 1136 S Belmont Ave, Arlington Heights, IL 60005
    2,239 sqft | $277/sqft | built 1999 | 6% smaller (2,239 vs 2,378 sqft); Similar age (1999 vs 2001); Similar lot size (6,100 vs 6,100 sqft)
    $620,000
  • 1050 S Highland Ave, Arlington Heights, IL 60005
    2,551 sqft | $263/sqft | built 2000 | 7% larger (2,551 vs 2,378 sqft); Similar age (2000 vs 2001); Lot 11% larger (6,750 vs 6,100 sqft)
    $670,010
  • 1116 S Pine Ave, Arlington Heights, IL 60005
    2,164 sqft | $136/sqft | built 1993 | 9% smaller (2,164 vs 2,378 sqft); Similar lot size (6,000 vs 6,100 sqft); Same quality (Average)
    $294,500
  • 1116 S Pine Ave, Arlington Heights, IL 60005
    2,164 sqft | $136/sqft | built 1993 | 9% smaller (2,164 vs 2,378 sqft); Similar lot size (6,000 vs 6,100 sqft); Same quality (Average)
    $294,500
  • 234 S Douglas Ave, Mount Prospect, IL 60056
    2,084 sqft | $245/sqft | built 1989 | 12% smaller (2,084 vs 2,378 sqft); Similar lot size (6,100 vs 6,100 sqft); Same quality (Average)
    $510,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

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 8.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$594,500−$55,500−8.5%
2025$650,000+$195,630+43.1%
2024$454,370——
2-year total+$140,130+30.8%