Williamson Value property tax analysis

5837 Casstello Dr, Round Rock, TX 78665

2 bathrooms, 1,809 sqft, built 2016, in H123414C - Siena Limmer Loop Appraised at $365,460 for 2026.

Williamson County account 357090

Appraised value
$365,460
Tax year 2026
Market value
$365,460
Living area
1,809 sqft
$202 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 -3.7% from $379,603 in 2025 to $365,460 in 2026.