Williamson Value property tax analysis

12909 Marimba Trl, Austin, TX 78729

2 bathrooms, 1,476 sqft, built 1991, in R390485G - Milwood Sec 28 & 29 Appraised at $409,751 for 2026.

Williamson County account 139143

Appraised value
$409,751
Tax year 2026
Market value
$409,751
Living area
1,476 sqft
$278 per sqft
Year built
1991

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 +7.7% from $380,566 in 2025 to $409,751 in 2026.

Recent sale history

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

  • $424,995 sale recorded on November-10-2025