Beta Williamson County, TX only — data and coverage are limited during early access.

99 TWIN RIDGE PKWY, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

Built 1990

Property at a Glance

There are not enough comparable properties nearby to estimate a price range. The Williamson County Appraisal District values this home at $425,635.

Estimated Value Range

WCAD Appraised Value $425,635

Comparable data is not yet available for this property. The Williamson County Appraisal District values it at $425,635.

The Neighborhood

This home is valued 52.8% below the R20EC1 - COUNTRY CLUB / GOLF COURSE - EAST ROUND ROCK median of $901,878. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 0.0% over the past year.

R20EC1 - COUNTRY CLUB / GOLF COURSE - EAST ROUND ROCK

outlier low
5 Properties
$901,878 Median Value
+0.0% YoY Change
0% Have Pool
0% Have Garage
This Home
$425,635
Median
$901,878

This home is -52.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,658 across all districts. With a homestead exemption claimed, that drops to $6,329 — saving $1,329 per year. That's $527 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,801
Round RockCity0.3720%$1,583
Williamson CountyCounty0.3694%$1,572
Austin Community Collegespecial0.1034%$440
Williamson County FM/RdCounty0.0443%$189
Upper Brushy Creek WCIDWater0.0170%$72
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,658

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

View full property details