Cook County Value

9140 N Washington St, Niles, IL 60714

4 bed / 3 bath, 3,680 sqft, built 1999, in Maine. Assessor market value for 2026: $780,010.

Cook County account 09144110530000

Assessor market value
$780,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,680 sqft
$212 per sqft
Year built
1999
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 60714 and Maine assessment pages.

Local guide: Maine Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for Maine 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 stayed about the same, from $780,010 in 2025 to $780,010 in 2026.
  • Assessor market value per square footThe current public record shows about $212 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Maine neighborhood and ZIP 60714.
  • Neighborhood value signalAmong 3,837 residential records in the same neighborhood, the average assessor market value is about $283 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.2% on average.

Comparable assessments

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

  • 8109 Davis St, Niles, IL 60714
    3,721 sqft | $234/sqft | built 2004 | Similar size (3,721 vs 3,680 sqft); Similar age (2004 vs 1999); Similar lot size (10,192 vs 9,990 sqft)
    $870,000
  • 8023 W Davis St, Niles, IL 60714
    3,836 sqft | $238/sqft | built 2006 | Similar size (3,836 vs 3,680 sqft); Similar lot size (10,016 vs 9,990 sqft); Same quality (Average)
    $912,730
  • 416 Huber Ln, Glenview, IL 60025
    3,480 sqft | $236/sqft | built 2001 | 5% smaller (3,480 vs 3,680 sqft); Similar age (2001 vs 1999); Similar lot size (10,112 vs 9,990 sqft)
    $820,000
  • 8202 W Park Ave, Niles, IL 60714
    3,821 sqft | $209/sqft | built 1996 | Similar size (3,821 vs 3,680 sqft); Similar age (1996 vs 1999); Similar lot size (9,672 vs 9,990 sqft)
    $800,000
  • 3215 Greenbriar Dr, Glenview, IL 60025
    3,892 sqft | $221/sqft | built 2000 | 6% larger (3,892 vs 3,680 sqft); Similar age (2000 vs 1999); Similar lot size (9,976 vs 9,990 sqft)
    $860,000

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: . Showing the last prepared sales evidence while recent sales are refreshed. 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$780,010$00.0%
2025$780,010+$140,000+21.9%
2024$640,010——
2-year total+$140,000+21.9%