Beta Williamson County, TX only — data and coverage are limited during early access.

4520 SANSONE DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed4 bath3,565 sqftBuilt 2013

Property at a Glance

This home is estimated between $857,623 and $1,204,100, with a best estimate of $917,569. 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

$857,623 $1,204,100
Best Estimate
$917,569
WCAD Value
$938,990
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R421612B - TERAVISTA GATED. The estimated range of $857,623 and $1,204,100 should be treated as a rough guide.

Comparable Properties (5)

4503 SANSONE DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 3,446 sqft Built 2013
Raw Value $873,640
Adjusted Value $916,139

Adjusted +$42,499 for 119 sqft more living space. Net adjustment: +$42,499.

4 bed 3 bath 2,951 sqft Built 2011
Raw Value $638,340
Adjusted Value $857,623

Adjusted +$219,283 for 614 sqft more living space. Net adjustment: +$219,283.

5 bed 4 bath 2,407 sqft Built 2012
Raw Value $658,016
Adjusted Value $1,071,582

Adjusted +$413,566 for 1,158 sqft more living space. Net adjustment: +$413,566.

4 bed 3 bath 2,568 sqft Built 2009
Raw Value $561,502
Adjusted Value $917,569

Adjusted +$356,067 for 997 sqft more living space. Net adjustment: +$356,067.

4 bed 3 bath 2,530 sqft Built 2009
Raw Value $834,462
Adjusted Value $1,204,100

Adjusted +$369,638 for 1,035 sqft more living space. Net adjustment: +$369,638.

The Neighborhood

This home is valued 4.6% 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
$938,990
Median
$984,146

This home is -4.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $17,773 across all districts. With a homestead exemption claimed, that drops to $16,349 — saving $1,424 per year. That's $1,362 per month a buyer should budget. The assessed value increased +8.8% vs the subdivision average of +0.5%. This above-average increase gives a protest opportunity score of 62 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$8,386
Williamson CountyCounty0.3694%$3,469
Williamson County MUD #11MUD0.3656%$3,433
Austin Community Collegespecial0.1034%$971
Williamson County ESD #9 - Round RockESD0.0999%$938
Williamson County FM/RdCounty0.0443%$416
Upper Brushy Creek WCIDWater0.0170%$160
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8928%$17,773
62 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $917,569 would pay approximately $5,727 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.

View full property details