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3934 SANSOME LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,631 sqftBuilt 2015

Property at a Glance

This home is estimated between $521,868 and $749,708, with a best estimate of $693,300. 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

$521,868 $749,708
Best Estimate
$693,300
WCAD Value
$629,149
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 $521,868 and $749,708. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3909 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,144 sqft Built 2016
Raw Value $587,171
Adjusted Value $693,300

Adjusted +$107,955 for 487 sqft more living space and -$1,826 for being older. Net adjustment: +$106,129.

3938 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,891 sqft Built 2015
Raw Value $585,670
Adjusted Value $749,708

Adjusted +$164,038 for 740 sqft more living space. Net adjustment: +$164,038.

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 $712,815

Adjusted +$116,157 for 524 sqft more living space and +$1,826 for being newer. Net adjustment: +$117,983.

3925 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,786 sqft Built 2015
Raw Value $698,710
Adjusted Value $664,351

Adjusted -$34,359 for 155 sqft less living space. Net adjustment: -$34,359.

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 $521,868

Adjusted -$24,162 for 109 sqft less living space and -$1,826 for being older. Net adjustment: -$25,988.

The Neighborhood

This home is valued 20.2% 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
$629,149
Median
$523,371

This home is +20.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,000 across all districts. With a homestead exemption claimed, that drops to $11,413 — saving $1,587 per year. That's $951 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%$6,610
Highlands at Mayfield Ranch MUDMUD0.4850%$3,051
Williamson CountyCounty0.3694%$2,324
Williamson County ESD #9 - Round RockESD0.0999%$629
Williamson County FM/RdCounty0.0443%$279
Upper Brushy Creek WCIDWater0.0170%$107
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$13,000

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $693,300 would pay approximately $4,328 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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