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3925 SANSOME LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed4 bath2,786 sqftBuilt 2015

Property at a Glance

This home is estimated between $556,227 and $747,174, with a best estimate of $586,078. 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

$556,227 $747,174
Best Estimate
$586,078
WCAD Value
$698,710
High Confidence

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

Based on 5 comparable properties in G799514C - MAYFIELD RANCH, this home's estimated market value is between $556,227 and $747,174. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3905 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,107 sqft Built 2014
Raw Value $594,832
Adjusted Value $747,174

Adjusted +$150,516 for 679 sqft more living space and +$1,826 for being newer. Net adjustment: +$152,342.

3942 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,740 sqft Built 2016
Raw Value $547,856
Adjusted Value $556,227

Adjusted +$10,197 for 46 sqft more living space and -$1,826 for being older. Net adjustment: +$8,371.

3913 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,868 sqft Built 2015
Raw Value $585,298
Adjusted Value $567,121

Adjusted -$18,177 for 82 sqft less living space. Net adjustment: -$18,177.

3901 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,528 sqft Built 2014
Raw Value $546,870
Adjusted Value $605,888

Adjusted +$57,192 for 258 sqft more living space and +$1,826 for being newer. Net adjustment: +$59,018.

3930 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,962 sqft Built 2015
Raw Value $625,093
Adjusted Value $586,078

Adjusted -$39,015 for 176 sqft less living space. Net adjustment: -$39,015.

The Neighborhood

This home is valued 33.5% 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

above average
1,093 Properties
$523,371 Median Value
-9.3% YoY Change
1% Have Pool
100% Have Garage
This Home
$698,710
Median
$523,371

This home is +33.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,437 across all districts. With a homestead exemption claimed, that drops to $12,837 — saving $1,600 per year. That's $1,070 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%$7,341
Highlands at Mayfield Ranch MUDMUD0.4850%$3,389
Williamson CountyCounty0.3694%$2,581
Williamson County ESD #9 - Round RockESD0.0999%$698
Williamson County FM/RdCounty0.0443%$310
Upper Brushy Creek WCIDWater0.0170%$119
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$14,437

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $586,078 would pay approximately $3,658 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.

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