Williamson Value property tax analysis

12013 Grey Rock Ln, Austin, TX 78750

2 bathrooms, 1,617 sqft, built 1977, in R3P5480G - Anderson Mill 12,16 - 20 - Partially In Tcad Appraised at $429,817 for 2026.

Williamson County account 120112

Appraised value
$429,817
Tax year 2026
Market value
$429,817
Living area
1,617 sqft
$266 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 +11.9% from $384,068 in 2025 to $429,817 in 2026.