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

RR 620, 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 $17,190.

Estimated Value Range

WCAD Appraised Value $17,190

Comparable data is not yet available for this property. The Williamson County Appraisal District values it at $17,190.

The Neighborhood

This home is valued 96.3% below the R301580A - Robinson, Austin White Lime median of $460,832. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 16.8% over the past year.

R301580A - Robinson, Austin White Lime

outlier low
84 Properties
$460,832 Median Value
-16.8% YoY Change
0% Have Pool
0% Have Garage
This Home
$17,190
Median
$460,832

This home is -96.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $263 across all districts. With a homestead exemption claimed, that drops to $91 — saving $172 per year. That's $8 per month a buyer should budget. The assessed value increased 0.0% vs the subdivision average of -16.8%. This above-average increase gives a protest opportunity score of 50 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$154
Williamson CountyCounty0.3694%$64
Austin Community Collegespecial0.1034%$18
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$17
Williamson County FM/RdCounty0.0443%$8
Upper Brushy Creek WCIDWater0.0170%$3
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5273%$263
50 / 100

Moderate opportunity to protest.

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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