Cook County Value

15805 Whipple Ave Markham, IL 60428

4 bed / 2 bath, 1,660 sqft, built 1939, in Bremen. Assessor market value for 2025: $70,430.

Cook County account 28133270020000

Likely too high

about $21,000

8 similar homes nearby point to a value about $21,000 lower than yours.

Assessor market value$70,430
Similar homes$49,584
$20,846 gap · bars start at $0

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

Assessor market value
$70,430
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,660 sqft
$42 per sqft
Year built
1939
Average quality

Why we think so

Similar homes' assessments

Strong

4 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $29.87/sqft, which supports a value of $49,584.

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 60428 and Bremen assessment pages.

Appeal deadlines

For Bremen, appeals to the Assessor closed . Board of Review dates for Bremen 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 $70,430 in 2024 to $70,430 in 2025.
  • Assessor market value per square footThe current public record shows about $42 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Bremen neighborhood and ZIP 60428.
  • Neighborhood value signalAmong 281 residential records in the same neighborhood, the average assessor market value is about $85 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

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

  • 15805 Whipple Ave Markham, IL 60428
    1,660 sqft | $19/sqft | built 1939 | Similar size (1,660 vs 1,660 sqft); Built same year (1939); Similar lot size (3,660 vs 3,660 sqft)
    $31,210
  • 15805 Whipple Ave Markham, IL 60428
    1,660 sqft | $29/sqft | built 1939 | Similar size (1,660 vs 1,660 sqft); Built same year (1939); Similar lot size (3,660 vs 3,660 sqft)
    $48,370
  • 15758 Whipple Ave Markham, IL 60428
    1,585 sqft | $44/sqft | built 1938 | Similar size (1,585 vs 1,660 sqft); Similar age (1938 vs 1939); Similar lot size (3,660 vs 3,660 sqft)
    $70,100
  • 15802 Whipple Ave Markham, IL 60428
    1,587 sqft | $30/sqft | built 1938 | Similar size (1,587 vs 1,660 sqft); Similar age (1938 vs 1939); Similar lot size (3,660 vs 3,660 sqft)
    $47,410
  • 15704 Whipple Ave Markham, IL 60428
    1,680 sqft | $68/sqft | built 1950 | Similar size (1,680 vs 1,660 sqft); Similar lot size (3,660 vs 3,660 sqft); Same quality (Average)
    $114,660

Recent comparable sales

No usable comparable sales are available in this data snapshot.

Public appraisal comparison for 2025. 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 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$70,430$00.0%
2024$70,430$00.0%
2023$70,430+$50,170+247.6%
2022$20,260$00.0%
2021$20,260+$100.0%
2020$20,250——
5-year total+$50,180+247.8%