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4538 SANSONE DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath3,135 sqftBuilt 2016

Property at a Glance

This home is estimated between $606,050 and $1,065,907, with a best estimate of $818,539. That places the property below the R421612B - TERAVISTA GATED median of $984,146, in a neighborhood that appreciated 0.5% over the past year.

Estimated Value Range

$606,050 $1,065,907
Best Estimate
$818,539
WCAD Value
$816,440
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R421612B - TERAVISTA GATED. The estimated range of $606,050 and $1,065,907 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,470 sqft Built 2013
Raw Value $828,410
Adjusted Value $1,065,907

Adjusted +$237,497 for 665 sqft more living space. Net adjustment: +$237,497.

4 bed 2 bath 2,740 sqft Built 2018
Raw Value $464,980
Adjusted Value $606,050

Adjusted +$141,070 for 395 sqft more living space. Net adjustment: +$141,070.

4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $747,580

Adjusted +$288,210 for 807 sqft more living space. Net adjustment: +$288,210.

4 bed 3 bath 1,920 sqft Built 2016
Raw Value $384,616
Adjusted Value $818,539

Adjusted +$433,923 for 1,215 sqft more living space. Net adjustment: +$433,923.

4 bed 3 bath 1,887 sqft Built 2016
Raw Value $423,749
Adjusted Value $869,457

Adjusted +$445,708 for 1,248 sqft more living space. Net adjustment: +$445,708.

The Neighborhood

This home is valued 17.0% below the R421612B - TERAVISTA GATED median of $984,146. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 0.5% over the past year.

R421612B - TERAVISTA GATED

below average
36 Properties
$984,146 Median Value
+0.5% YoY Change
0% Have Pool
100% Have Garage
This Home
$816,440
Median
$984,146

This home is -17.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $15,453 across all districts. With a homestead exemption claimed, that drops to $14,052 — saving $1,401 per year. That's $1,171 per month a buyer should budget. The assessed value increased +6.6% vs the subdivision average of +0.5%. This above-average increase gives a protest opportunity score of 51 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,292
Williamson CountyCounty0.3694%$3,016
Williamson County MUD #11MUD0.3656%$2,985
Austin Community Collegespecial0.1034%$844
Williamson County ESD #9 - Round RockESD0.0999%$816
Williamson County FM/RdCounty0.0443%$362
Upper Brushy Creek WCIDWater0.0170%$139
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8928%$15,453
51 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $818,539 would pay approximately $5,109 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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