Cook County Value

840 N Washtenaw Ave 1, Chicago, IL 60622

4 bed / 2 bath, 1,386 sqft, built 1884, in North Chicago. Assessor market value for 2026: $453,740.

Cook County account 16014250290000

Assessor market value
$453,740
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,386 sqft
$327 per sqft
Year built
1884
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 60622 and North Chicago assessment pages.

Local guide: West Chicago Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For West Chicago, appeals to the Assessor closed . Board of Review dates for West Chicago 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 $453,740 in 2025 to $453,740 in 2026.
  • Assessor market value per square footThe current public record shows about $327 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the North Chicago neighborhood and ZIP 60622.
  • Neighborhood value signalAmong 5,447 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 -0.2% on average.

Comparable assessments

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

  • 2646 W Rice St, Chicago, IL 60622
    1,401 sqft | $318/sqft | built 1888 | Similar size (1,401 vs 1,386 sqft); Similar age (1888 vs 1884); Similar lot size (3,125 vs 3,150 sqft)
    $445,390
  • 913 N Richmond St, Chicago, IL 60622
    1,383 sqft | $289/sqft | built 1888 | Similar size (1,383 vs 1,386 sqft); Similar age (1888 vs 1884); Similar lot size (3,075 vs 3,150 sqft)
    $400,000
  • 1739 N Rockwell St, Chicago, IL 60647
    1,388 sqft | $328/sqft | built 1891 | Similar size (1,388 vs 1,386 sqft); Similar lot size (3,125 vs 3,150 sqft); Same quality (Average)
    $455,100
  • 1714 N Artesian Ave, Chicago, IL 60647
    1,400 sqft | $350/sqft | built 1883 | Similar size (1,400 vs 1,386 sqft); Similar age (1883 vs 1884); Similar lot size (2,976 vs 3,150 sqft)
    $490,000
  • 2333 N Talman Ave, Chicago, IL 60647
    1,386 sqft | $346/sqft | built 1883 | Similar size (1,386 vs 1,386 sqft); Similar age (1883 vs 1884); Similar lot size (2,898 vs 3,150 sqft)
    $480,000

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

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$453,740$00.0%
2025$453,740−$16,260−3.5%
2024$470,000+$23,880+5.4%
2023$446,120$00.0%
2022$446,120−$33,880−7.1%
2021$480,000+$175,630+57.7%
2020$304,370——
6-year total+$149,370+49.1%