Williamson Value property tax analysis

5846 Casstello Dr, Round Rock, TX 78665

2 bathrooms, 1,809 sqft, built 2016, in H123414C - Siena Limmer Loop Appraised at $409,498 for 2026.

Williamson County account 357080

Appraised value
$409,498
Tax year 2026
Market value
$409,498
Living area
1,809 sqft
$226 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 -0.5% from $411,392 in 2025 to $409,498 in 2026.