Williamson Value property tax analysis

1290 Johnson Ln, Round Rock, TX 78665

2 bathrooms, 2,068 sqft, built 1978, in R002D78G - East Round Rock Williamson Co Abstracts Lt 20 Acs Appraised at $659,870 for 2026.

Williamson County account 111227

Appraised value
$659,870
Tax year 2026
Market value
$775,621
Living area
2,068 sqft
$319 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 +10.0% from $599,882 in 2025 to $659,870 in 2026.