Williamson Value property tax analysis

903 Mammoth Ct, Round Rock, TX 78681

2 bathrooms, 1,806 sqft, built 2000, in R107503F - Preserve At Stone Oak - Ph 3 & 4 Appraised at $375,280 for 2026.

Williamson County account 212203

Appraised value
$375,280
Tax year 2026
Market value
$375,280
Living area
1,806 sqft
$208 per sqft
Year built
2000

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 -6.6% from $401,613 in 2025 to $375,280 in 2026.