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3933 SANSOME LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath2,446 sqftBuilt 2015

Property at a Glance

This home is estimated between $475,358 and $652,290, with a best estimate of $491,752. That places the property below the G799514C - MAYFIELD RANCH median of $523,371, in a neighborhood that declined 9.3% over the past year.

Estimated Value Range

$475,358 $652,290
Best Estimate
$491,752
WCAD Value
$481,757
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 $475,358 and $652,290. 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 $652,290

Adjusted +$66,945 for 302 sqft more living space and -$1,826 for being older. Net adjustment: +$65,119.

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 $480,858

Adjusted -$65,172 for 294 sqft less living space and -$1,826 for being older. Net adjustment: -$66,998.

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 $491,752

Adjusted -$93,546 for 422 sqft less living space. Net adjustment: -$93,546.

3946 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,025 sqft Built 2016
Raw Value $605,533
Adjusted Value $475,358

Adjusted -$128,349 for 579 sqft less living space and -$1,826 for being older. Net adjustment: -$130,175.

3941 SANSOME LN, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,399 sqft Built 2016
Raw Value $487,483
Adjusted Value $496,076

Adjusted +$10,419 for 47 sqft more living space and -$1,826 for being older. Net adjustment: +$8,593.

The Neighborhood

This home is valued 8.0% below the G799514C - MAYFIELD RANCH median of $523,371. That positions it competitively for buyers comparing within the neighborhood. 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
$481,757
Median
$523,371

This home is -8.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,954 across all districts. With a homestead exemption claimed, that drops to $8,395 — saving $1,559 per year. That's $700 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%$5,061
Highlands at Mayfield Ranch MUDMUD0.4850%$2,337
Williamson CountyCounty0.3694%$1,780
Williamson County ESD #9 - Round RockESD0.0999%$481
Williamson County FM/RdCounty0.0443%$214
Upper Brushy Creek WCIDWater0.0170%$82
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0663%$9,954

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $491,752 would pay approximately $3,070 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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