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5924 AGOSTINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,192 sqftBuilt 2019

Property at a Glance

This home is estimated between $371,983 and $455,135, with a best estimate of $428,756. That places the property above the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$371,983 $455,135
Best Estimate
$428,756
WCAD Value
$454,959
High Confidence

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

Based on 5 comparable properties in H121413C - SIENA, this home's estimated market value is between $371,983 and $455,135. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

6108 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,845 sqft Built 2015
Raw Value $346,483
Adjusted Value $428,756

Adjusted +$73,359 for 347 sqft more living space and +$8,914 for being newer. Net adjustment: +$82,273.

8206 AREZZO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,208 sqft Built 2014
Raw Value $431,179
Adjusted Value $438,939

Adjusted -$3,383 for 16 sqft less living space and +$11,143 for being newer. Net adjustment: +$7,760.

5857 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,448 sqft Built 2017
Raw Value $421,647
Adjusted Value $371,983

Adjusted -$54,121 for 256 sqft less living space and +$4,457 for being newer. Net adjustment: -$49,664.

7945 BASSANO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,706 sqft Built 2017
Raw Value $347,933
Adjusted Value $455,135

Adjusted +$102,745 for 486 sqft more living space and +$4,457 for being newer. Net adjustment: +$107,202.

6117 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,855 sqft Built 2015
Raw Value $348,069
Adjusted Value $428,228

Adjusted +$71,245 for 337 sqft more living space and +$8,914 for being newer. Net adjustment: +$80,159.

The Neighborhood

This home is valued 12.0% above the H121413C - SIENA median of $406,354. With 1,611 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.4% over the past year.

H121413C - SIENA

typical
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$454,959
Median
$406,354

This home is +12.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,472 across all districts. With a homestead exemption claimed, that drops to $8,701 — saving $1,771 per year. That's $725 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
Hutto ISDSchool1.2052%$5,483
Siena MUD #1MUD0.5250%$2,389
Williamson CountyCounty0.3694%$1,681
Williamson County ESD #3 - HuttoESD0.1000%$455
Williamson County FM/RdCounty0.0443%$202
EWC Higher Ed Centerspecial0.0409%$186
Upper Brushy Creek WCIDWater0.0170%$77
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,472

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $428,756 would pay approximately $2,676 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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