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

3900 HARVEY PENICK DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath1,433 sqftBuilt 2007

Property at a Glance

This home is estimated between $428,789 and $558,141, with a best estimate of $494,436. That places the property below the R553505E - FOREST CREEK SEC 32, 34, 35 median of $494,830, in a neighborhood that declined 2.4% over the past year.

Estimated Value Range

$428,789 $558,141
Best Estimate
$494,436
WCAD Value
$549,824
High Confidence

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

Based on 5 comparable properties in R553505E - FOREST CREEK SEC 32, 34, 35, this home's estimated market value is between $428,789 and $558,141. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3929 HARVEY PENICK DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,625 sqft Built 2007
Raw Value $608,625
Adjusted Value $558,141

Adjusted -$50,484 for 192 sqft less living space. Net adjustment: -$50,484.

3926 HARVEY PENICK DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,829 sqft Built 2007
Raw Value $598,560
Adjusted Value $494,436

Adjusted -$104,124 for 396 sqft less living space. Net adjustment: -$104,124.

3932 HARVEY PENICK DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,585 sqft Built 2011
Raw Value $560,173
Adjusted Value $513,079

Adjusted -$39,967 for 152 sqft less living space and -$7,127 for being older. Net adjustment: -$47,094.

3851 HARVEY PENICK DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,910 sqft Built 2007
Raw Value $554,211
Adjusted Value $428,789

Adjusted -$125,422 for 477 sqft less living space. Net adjustment: -$125,422.

3902 HARVEY PENICK DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,676 sqft Built 2007
Raw Value $547,629
Adjusted Value $483,735

Adjusted -$63,894 for 243 sqft less living space. Net adjustment: -$63,894.

The Neighborhood

This home is valued 11.1% above the R553505E - FOREST CREEK SEC 32, 34, 35 median of $494,830. With 660 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.4% over the past year.

R553505E - FOREST CREEK SEC 32, 34, 35

typical
660 Properties
$494,830 Median Value
-2.4% YoY Change
0% Have Pool
98% Have Garage
This Home
$549,824
Median
$494,830

This home is +11.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,893 across all districts. With a homestead exemption claimed, that drops to $8,541 — saving $1,352 per year. That's $712 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%$4,910
Round RockCity0.3720%$2,045
Williamson CountyCounty0.3694%$2,031
Austin Community Collegespecial0.1034%$569
Williamson County FM/RdCounty0.0443%$244
Upper Brushy Creek WCIDWater0.0170%$93
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,893

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $494,436 would pay approximately $3,086 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