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4521 SANSONE DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,474 sqftBuilt 2012

Property at a Glance

This home is estimated between $511,512 and $956,283, with a best estimate of $633,389. 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

$511,512 $956,283
Best Estimate
$633,389
WCAD Value
$920,459
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 $511,512 and $956,283 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 $829,839

Adjusted +$1,429 for 4 sqft more living space. Net adjustment: +$1,429.

4 bed 3 bath 2,382 sqft Built 2002
Raw Value $923,426
Adjusted Value $956,283

Adjusted +$32,857 for 92 sqft more living space. Net adjustment: +$32,857.

4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $511,512

Adjusted +$52,142 for 146 sqft more living space. Net adjustment: +$52,142.

4 bed 3 bath 1,920 sqft Built 2016
Raw Value $384,616
Adjusted Value $582,470

Adjusted +$197,854 for 554 sqft more living space. Net adjustment: +$197,854.

4 bed 3 bath 1,887 sqft Built 2016
Raw Value $423,749
Adjusted Value $633,389

Adjusted +$209,640 for 587 sqft more living space. Net adjustment: +$209,640.

The Neighborhood

This home is valued 6.5% 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

typical
36 Properties
$984,146 Median Value
+0.5% YoY Change
0% Have Pool
100% Have Garage
This Home
$920,459
Median
$984,146

This home is -6.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $17,422 across all districts. With a homestead exemption claimed, that drops to $16,002 — saving $1,420 per year. That's $1,334 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
Round Rock ISDSchool0.8931%$8,221
Williamson CountyCounty0.3694%$3,401
Williamson County MUD #11MUD0.3656%$3,365
Austin Community Collegespecial0.1034%$952
Williamson County ESD #9 - Round RockESD0.0999%$920
Williamson County FM/RdCounty0.0443%$408
Upper Brushy Creek WCIDWater0.0170%$156
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8928%$17,422

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $633,389 would pay approximately $3,954 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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