Cook County Value property tax analysis

540 Gunderson Ave, Oak Park, IL 60304

4 bed / 1 bath, 1,806 sqft, built 1910, in Oak Park Appraised at $620,000 for 2026.

Cook County account 16182060120000

Appraised value
$620,000
Tax year 2026
Market value
$620,000
Living area
1,806 sqft
$343 per sqft
Year built
1910
Average

Why this page matters for a protest

A strong tax protest page needs the county value, property facts, and enough context to compare this home with similar properties nearby. This page gives homeowners a starting point before reviewing comparable homes and prior-year changes.

The county value changed +32.4% from $468,370 in 2025 to $620,000 in 2026.