Cook County Value property tax analysis

421 S Grove Ave, Oak Park, IL 60302

4 bed / 2 bath, 2,080 sqft, built 1913, in Oak Park Appraised at $740,000 for 2026.

Cook County account 16073260120000

Appraised value
$740,000
Tax year 2026
Market value
$740,000
Living area
2,080 sqft
$356 per sqft
Year built
1913
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 +31.2% from $563,920 in 2025 to $740,000 in 2026.