Cook County Value

817 N Long Ave, Chicago, IL 60651

6 bed / 4 bath, 2,318 sqft, built 1903, in West Chicago. Assessor market value for 2026: $260,000.

Cook County account 16043280140000

Likely too high

about $31,000

8 similar homes nearby point to a value about $31,000 lower than yours.

Assessor market value$260,000
Similar homes$229,134
$30,866 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$260,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,318 sqft
$112 per sqft
Year built
1903
Average quality

Why we think so

Similar homes' assessments

Strong

6 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $95.32/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $81,000. Counting your land in place of theirs where theirs is less, they support a value of $229,134.

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 60651 and West 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 increased 32.0% from $197,000 in 2025 to $260,000 in 2026.
  • Assessor market value per square footThe current public record shows about $112 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the West Chicago neighborhood and ZIP 60651.
  • Neighborhood value signalAmong 6,607 residential records in the same neighborhood, the average assessor market value is about $118 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -0.1% on average.

Comparable assessments

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

  • 840 N Laramie Ave, Chicago, IL 60651
    2,330 sqft | $119/sqft | built 1901 | Similar size (2,330 vs 2,318 sqft); Similar age (1901 vs 1903); Similar lot size (6,300 vs 6,750 sqft)
    $278,310
  • 307 N Parkside Ave, Chicago, IL 60644
    2,308 sqft | $95/sqft | built 1903 | Similar size (2,308 vs 2,318 sqft); Built same year (1903); Similar lot size (6,390 vs 6,750 sqft)
    $220,000
  • 533 N Long Ave, Chicago, IL 60644
    2,310 sqft | $104/sqft | built 1898 | Similar size (2,310 vs 2,318 sqft); Similar age (1898 vs 1903); Similar lot size (6,988 vs 6,750 sqft)
    $240,000
  • 5112 W Fulton St, Chicago, IL 60644
    2,322 sqft | $85/sqft | built 1901 | Similar size (2,322 vs 2,318 sqft); Similar age (1901 vs 1903); Lot 11% smaller (6,000 vs 6,750 sqft)
    $197,000
  • 725 N Lotus Ave, Chicago, IL 60644
    2,317 sqft | $112/sqft | built 1898 | Similar size (2,317 vs 2,318 sqft); Similar age (1898 vs 1903); Lot 11% larger (7,500 vs 6,750 sqft)
    $260,000

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

Up 32.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$260,000+$63,000+32.0%
2025$197,000$00.0%
2024$197,000+$26,990+15.9%
2023$170,010$00.0%
2022$170,010$00.0%
2021$170,010+$6,590+4.0%
2020$163,420——
6-year total+$96,580+59.1%