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

81 PARK, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

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 $3,649,457.

Estimated Value Range

WCAD Appraised Value $3,649,457

Comparable data is not yet available for this property. The Williamson County Appraisal District values it at $3,649,457.

The Neighborhood

This home is valued 42.9% above the R20CP - Rr East Park Bldgs median of $2,554,215. With 7 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 0.1% over the past year.

R20CP - Rr East Park Bldgs

above average
7 Properties
$2,554,215 Median Value
-0.1% YoY Change
14% Have Pool
0% Have Garage
This Home
$3,649,457
Median
$2,554,215

This home is +42.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $65,664 across all districts. With a homestead exemption claimed, that drops to $63,739 — saving $1,925 per year. That's $5,312 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%$32,593
Round RockCity0.3720%$13,576
Williamson CountyCounty0.3694%$13,483
Austin Community Collegespecial0.1034%$3,774
Williamson County FM/RdCounty0.0443%$1,618
Upper Brushy Creek WCIDWater0.0170%$620
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$65,664

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.

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