Williamson Value property tax analysis

16520 Castletroy Dr, Austin, TX 78717

2 bathrooms, 1,872 sqft, built 2001, in R250401D - Avery Ranch East (Ph. 1) Appraised at $491,964 for 2026.

Williamson County account 223948

Appraised value
$491,964
Tax year 2026
Market value
$491,964
Living area
1,872 sqft
$263 per sqft
Year built
2001

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 -2.0% from $502,104 in 2025 to $491,964 in 2026.