Williamson Value property tax analysis

5825 Casstello Dr, Round Rock, TX 78665

2 bathrooms, 1,581 sqft, built 2017, in H123414C - Siena Limmer Loop Appraised at $337,217 for 2026.

Williamson County account 357093

Appraised value
$337,217
Tax year 2026
Market value
$337,217
Living area
1,581 sqft
$213 per sqft
Year built
2017

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 -7.5% from $364,367 in 2025 to $337,217 in 2026.