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

1009 STILLHOUSE SPRINGS, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,078 sqftBuilt 1977

Property at a Glance

This home is estimated between $482,171 and $620,273, with a best estimate of $528,400. That places the property above the R210480H - Brushy Creek median of $296,542, in a neighborhood that declined 14.6% over the past year.

Estimated Value Range

$482,171 $620,273
Best Estimate
$528,400
WCAD Value
$401,633
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R210480H - Brushy Creek. The estimated range of $482,171 and $620,273 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,204 sqft Built 1980
Raw Value $570,583
Adjusted Value $543,265

Adjusted -$28,100 for 126 sqft less living space and -$4,820 for being older and +$5,602 for having a pool. Net adjustment: -$27,318.

3 bed 2 bath 1,966 sqft Built 1981
Raw Value $458,018
Adjusted Value $482,171

Adjusted +$24,978 for 112 sqft more living space and -$6,427 for being older and +$5,602 for having a pool. Net adjustment: +$24,153.

3 bed 2 bath 2,197 sqft Built 1984
Raw Value $515,288
Adjusted Value $483,104

Adjusted -$26,539 for 119 sqft less living space and -$11,247 for being older and +$5,602 for having a pool. Net adjustment: -$32,184.

4 bed 2 bath 1,911 sqft Built 1979
Raw Value $580,640
Adjusted Value $620,273

Adjusted +$37,244 for 167 sqft more living space and -$3,213 for being older and +$5,602 for having a pool. Net adjustment: +$39,633.

3 bed 2 bath 2,543 sqft Built 1984
Raw Value $637,749
Adjusted Value $528,400

Adjusted -$103,704 for 465 sqft less living space and -$11,247 for being older and +$5,602 for having a pool. Net adjustment: -$109,349.

The Neighborhood

This home is valued 35.4% above the R210480H - Brushy Creek median of $296,542. With 871 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 14.6% over the past year.

R210480H - Brushy Creek

above average
871 Properties
$296,542 Median Value
-14.6% YoY Change
2% Have Pool
94% Have Garage
This Home
$401,633
Median
$296,542

This home is +35.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,688 across all districts. With a homestead exemption claimed, that drops to $6,363 — saving $1,325 per year. That's $530 per month a buyer should budget. The assessed value increased -8.7% vs the subdivision average of -14.6%. This above-average increase gives a protest opportunity score of 30 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,587
Brushy Creek MUDMUD0.3868%$1,554
Williamson CountyCounty0.3694%$1,484
Austin Community Collegespecial0.1034%$415
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$402
Williamson County FM/RdCounty0.0443%$178
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$7,688
30 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $528,400 would pay approximately $3,298 per month (principal and interest only, excluding taxes and insurance).

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