Williamson Value property tax analysis

12009 Swallow Dr, Austin, TX 78750

2 bathrooms, 1,551 sqft, built 1977, in R353476G - Anderson Mill Appraised at $423,613 for 2026.

Williamson County account 133517

Appraised value
$423,613
Tax year 2026
Market value
$423,613
Living area
1,551 sqft
$273 per sqft
Year built
1977

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 +5.6% from $401,223 in 2025 to $423,613 in 2026.