Cook County Value

505 Columbia Ave, Hinsdale, IL 60521

4 bed / 3 bath, 4,789 sqft, built 1995 Assessor market value for 2026: $1,600,000.

Cook County account 18071170170000

In line with similar homes

8 similar homes nearby support a value at or above your county value.

Assessor market value$1,600,000
Similar homes$1,902,478
No gap: similar homes are at or above the county value · bars start at $0

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

Assessor market value
$1,600,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,789 sqft
$334 per sqft
Year built
1995

What we found

Similar homes' assessments

Weak

1 of 8 similar homes is assessed lower per square foot. Their similarity-weighted median is $387.01/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 $380,320. Counting your land in place of theirs where theirs is less, they support a value of $1,902,478.

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 60521 and CCAO Appraisal Area 21061 assessment pages.

Local guide: Lyons Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Lyons, appeals to the Assessor closed . Board of Review dates for Lyons 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 39.5% from $1,147,260 in 2025 to $1,600,000 in 2026.
  • Assessor market value per square footThe current public record shows about $334 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for ZIP 60521.
  • Neighborhood value signalAmong 384 residential records in the same neighborhood, the average assessor market value is about $439 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +37.7% on average.

Comparable assessments

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

  • 511 Columbia Ave, Hinsdale, IL 60521
    4,875 sqft | $330/sqft | built 1996 | Similar size (4,875 vs 4,789 sqft); Similar age (1996 vs 1995); Similar lot size (20,503 vs 21,129 sqft)
    $1,610,000
  • 927 Cleveland Rd, Hinsdale, IL 60521
    4,860 sqft | $580/sqft | built 1987 | Similar size (4,860 vs 4,789 sqft); Similar lot size (23,040 vs 21,129 sqft); Same neighborhood
    $2,820,000
  • 521 Columbia Ave, Hinsdale, IL 60521
    4,548 sqft | $358/sqft | built 1995 | 5% smaller (4,548 vs 4,789 sqft); Built same year (1995); Lot 13% larger (23,914 vs 21,129 sqft)
    $1,630,000
  • 527 Princeton Rd, Hinsdale, IL 60521
    4,936 sqft | $377/sqft | built 1983 | Similar size (4,936 vs 4,789 sqft); Lot 12% smaller (18,500 vs 21,129 sqft); Same neighborhood
    $1,860,000
  • 721 Taft Rd, Hinsdale, IL 60521
    5,252 sqft | $505/sqft | built 1999 | 10% larger (5,252 vs 4,789 sqft); Similar age (1999 vs 1995); Similar lot size (20,100 vs 21,129 sqft)
    $2,650,000

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

Up 39.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,600,000+$452,740+39.5%
2025$1,147,260$00.0%
2024$1,147,260$00.0%
2023$1,147,260+$46,170+4.2%
2022$1,101,090$00.0%
2021$1,101,090+$200.0%
2020$1,101,070——
6-year total+$498,930+45.3%