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

3758 HERMANN ST, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed4 bath2,184 sqftBuilt 2014

Property at a Glance

This home is estimated between $458,410 and $1,097,017, with a best estimate of $634,542. That places the property above the G799514C - MAYFIELD RANCH median of $523,371, in a neighborhood that declined 9.3% over the past year.

Estimated Value Range

$458,410 $1,097,017
Best Estimate
$634,542
WCAD Value
$639,986
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 $458,410 and $1,097,017. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3736 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $621,419

Adjusted +$59,408 for 268 sqft more living space. Net adjustment: +$59,408.

3601 BAINBRIDGE ST, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $634,542

Adjusted +$59,408 for 268 sqft more living space and -$3,652 for being older. Net adjustment: +$55,756.

4149 PRESIDIO LN, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $458,410

Adjusted -$14,187 for 64 sqft less living space and -$7,304 for being older. Net adjustment: -$21,491.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $909,673

Adjusted -$7,759 for 35 sqft less living space and +$12,783 for being newer. Net adjustment: +$5,024.

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,097,017

Adjusted -$116,822 for 527 sqft less living space and -$3,652 for being older. Net adjustment: -$120,474.

The Neighborhood

This home is valued 22.3% above the G799514C - MAYFIELD RANCH median of $523,371. With 1,093 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 9.3% over the past year.

G799514C - MAYFIELD RANCH

above average
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$639,986
Median
$523,371

This home is +22.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,224 across all districts. With a homestead exemption claimed, that drops to $11,635 — saving $1,589 per year. That's $970 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
Georgetown ISDSchool1.0506%$6,724
Highlands at Mayfield Ranch MUDMUD0.4850%$3,104
Williamson CountyCounty0.3694%$2,364
Williamson County ESD #9 - Round RockESD0.0999%$639
Williamson County FM/RdCounty0.0443%$284
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,224

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $634,542 would pay approximately $3,961 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