Williamson Value property tax analysis

5828 Mantalcino Dr, Round Rock, TX 78665

2 bathrooms, 1,686 sqft, built 2016, in H121413C - Siena Appraised at $363,910 for 2026.

Williamson County account 351063

Appraised value
$363,910
Tax year 2026
Market value
$363,910
Living area
1,686 sqft
$216 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 -4.6% from $381,468 in 2025 to $363,910 in 2026.