Cook County Value property tax analysis

1135 Clarence Ave, Oak Park, IL 60304

4 bed / 1 bath, 1,685 sqft, built 1918, in Oak Park Appraised at $580,000 for 2026.

Cook County account 16184160310000

Appraised value
$580,000
Tax year 2026
Market value
$580,000
Living area
1,685 sqft
$344 per sqft
Year built
1918
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 +70.6% from $340,000 in 2025 to $580,000 in 2026.