Williamson Value property tax analysis

3739 Castle Rock Dr, Round Rock, TX 78681

2 bathrooms, 1,467 sqft, built 2003, in R107503F - Preserve At Stone Oak - Ph 3 & 4 Appraised at $306,296 for 2026.

Williamson County account 232570

Appraised value
$306,296
Tax year 2026
Market value
$306,296
Living area
1,467 sqft
$209 per sqft
Year built
2003

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 -11.4% from $345,636 in 2025 to $306,296 in 2026.