Williamson Value property tax analysis

507 Maple Run, Round Rock, TX 78664

2 bathrooms, 1,327 sqft, built 1985, in R510485H - Southcreek Appraised at $318,342 for 2026.

Williamson County account 143900

Appraised value
$318,342
Tax year 2026
Market value
$318,342
Living area
1,327 sqft
$240 per sqft
Year built
1985

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 -4.7% from $333,965 in 2025 to $318,342 in 2026.