Williamson Value property tax analysis

5913 Agostino Dr, Round Rock, TX 78665

3 bed / 2 bath, 1,939 sqft, built 2020, in H121413C - Siena Appraised at $384,089 for 2026.

Williamson County account 395136

Appraised value
$384,089
Tax year 2026
Market value
$384,089
Living area
1,939 sqft
$198 per sqft
Year built
2020

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 -5.0% from $404,377 in 2025 to $384,089 in 2026.

Recent sale history

Recent transfers help establish whether the county value is tracking real market behavior.

  • $375,000 sale recorded on February-27-2026