Williamson Value property tax analysis

816 St Williams Ave, Round Rock, TX 78681

2 bathrooms, 2,043 sqft, built 1978, in R325576F - Round Rock West/Lake Creek West/Shadow Brook Appraised at $504,456 for 2026.

Williamson County account 127310

Appraised value
$504,456
Tax year 2026
Market value
$504,456
Living area
2,043 sqft
$247 per sqft
Year built
1978

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 -14.0% from $586,656 in 2025 to $504,456 in 2026.