Williamson Value property tax analysis

12003 Grey Rock Ln, Austin, TX 78750

2 bathrooms, 1,444 sqft, built 1977, in R3P5480G - Anderson Mill 12,16 - 20 - Partially In Tcad Appraised at $387,232 for 2026.

Williamson County account 120117

Appraised value
$387,232
Tax year 2026
Market value
$387,232
Living area
1,444 sqft
$268 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 -0.2% from $388,083 in 2025 to $387,232 in 2026.