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

3745 HERMANN ST, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,728 sqftBuilt 2014

Property at a Glance

This home is estimated between $579,000 and $1,217,607, with a best estimate of $755,133. 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

$579,000 $1,217,607
Best Estimate
$755,133
WCAD Value
$562,548
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 $579,000 and $1,217,607. 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 $742,010

Adjusted +$179,999 for 812 sqft more living space. Net adjustment: +$179,999.

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 $755,133

Adjusted +$179,999 for 812 sqft more living space and -$3,652 for being older. Net adjustment: +$176,347.

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 $579,000

Adjusted +$106,403 for 480 sqft more living space and -$7,304 for being older. Net adjustment: +$99,099.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $1,030,264

Adjusted +$112,832 for 509 sqft more living space and +$12,783 for being newer. Net adjustment: +$125,615.

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,217,607

Adjusted +$3,768 for 17 sqft more living space and -$3,652 for being older. Net adjustment: +$116.

The Neighborhood

This home is valued 7.5% 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

typical
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$562,548
Median
$523,371

This home is +7.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,624 across all districts. With a homestead exemption claimed, that drops to $10,049 — saving $1,575 per year. That's $837 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%$5,910
Highlands at Mayfield Ranch MUDMUD0.4850%$2,728
Williamson CountyCounty0.3694%$2,078
Williamson County ESD #9 - Round RockESD0.0999%$562
Williamson County FM/RdCounty0.0443%$249
Upper Brushy Creek WCIDWater0.0170%$96
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$11,624

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $755,133 would pay approximately $4,714 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