Williamson Value property tax analysis

3774 Castle Rock Dr, Round Rock, TX 78681

2 bathrooms, 1,788 sqft, built 2005, in R107503F - Preserve At Stone Oak - Ph 3 & 4 Appraised at $368,414 for 2026.

Williamson County account 255952

Appraised value
$368,414
Tax year 2026
Market value
$368,414
Living area
1,788 sqft
$206 per sqft
Year built
2005

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 -6.4% from $393,612 in 2025 to $368,414 in 2026.