Williamson Value property tax analysis

3813 Castle Rock Cv, Round Rock, TX 78681

2 bathrooms, 1,980 sqft, built 2005, in R107503F - Preserve At Stone Oak - Ph 3 & 4 Appraised at $397,430 for 2026.

Williamson County account 255979

Appraised value
$397,430
Tax year 2026
Market value
$397,430
Living area
1,980 sqft
$201 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 -4.3% from $415,143 in 2025 to $397,430 in 2026.