Williamson Value property tax analysis

5813 Casstello Dr, Round Rock, TX 78665

2 bathrooms, 1,674 sqft, built 2016, in H123414C - Siena Limmer Loop Appraised at $346,571 for 2026.

Williamson County account 357096

Appraised value
$346,571
Tax year 2026
Market value
$346,571
Living area
1,674 sqft
$207 per sqft
Year built
2016

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 -10.7% from $388,215 in 2025 to $346,571 in 2026.