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

3701 POWDERHORN DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,781 sqftBuilt 1979

Property at a Glance

This home is estimated between $399,903 and $460,209, with a best estimate of $438,018. 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

$399,903 $460,209
Best Estimate
$438,018
WCAD Value
$400,819
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $399,903 and $460,209. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3 bed 2 bath 1,626 sqft Built 1977
Raw Value $398,588
Adjusted Value $436,369

Adjusted +$34,568 for 155 sqft more living space and +$3,213 for being newer. Net adjustment: +$37,781.

3609 CORNERSTONE, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,269 sqft Built 1982
Raw Value $290,537
Adjusted Value $399,903

Adjusted +$114,186 for 512 sqft more living space and -$4,820 for being older. Net adjustment: +$109,366.

3115 FREEMONT ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,303 sqft Built 1984
Raw Value $347,567
Adjusted Value $446,137

Adjusted +$106,603 for 478 sqft more living space and -$8,033 for being older. Net adjustment: +$98,570.

4001 HILLSIDE DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,133 sqft Built 1979
Raw Value $293,501
Adjusted Value $438,018

Adjusted +$144,517 for 648 sqft more living space. Net adjustment: +$144,517.

3 bed 2 bath 1,971 sqft Built 1975
Raw Value $496,156
Adjusted Value $460,209

Adjusted -$42,374 for 190 sqft less living space and +$6,427 for being newer. Net adjustment: -$35,947.

The Neighborhood

This home is valued 35.2% 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
$400,819
Median
$296,542

This home is +35.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,672 across all districts. With a homestead exemption claimed, that drops to $6,348 — saving $1,324 per year. That's $529 per month a buyer should budget. The assessed value increased -4.7% vs the subdivision average of -14.6%. 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%$3,580
Brushy Creek MUDMUD0.3868%$1,551
Williamson CountyCounty0.3694%$1,481
Austin Community Collegespecial0.1034%$414
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$401
Williamson County FM/RdCounty0.0443%$178
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$7,672
50 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $438,018 would pay approximately $2,734 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