Williamson Value property tax analysis

105 Black St, Round Rock, TX 78664

1 bathrooms, 900 sqft, built 1965, in R701575F - Old Town Round Rock Appraised at $254,575 for 2026.

Williamson County account 126647

Appraised value
$254,575
Tax year 2026
Market value
$276,425
Living area
900 sqft
$283 per sqft
Year built
1965

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 +10.0% from $231,432 in 2025 to $254,575 in 2026.