Williamson Value property tax analysis

508 Main St, Round Rock, TX 78664

1 bathrooms, 1,074 sqft, built 1924, in R703T14G - Round Rock Historical Appraised at $431,184 for 2026.

Williamson County account 126663

Appraised value
$431,184
Tax year 2026
Market value
$431,184
Living area
1,074 sqft
$401 per sqft
Year built
1924

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 -12.4% from $492,304 in 2025 to $431,184 in 2026.