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5929 AGOSTINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,233 sqftBuilt 2019

Property at a Glance

This home is estimated between $380,651 and $463,803, with a best estimate of $437,424. 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

$380,651 $463,803
Best Estimate
$437,424
WCAD Value
$405,269
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 $380,651 and $463,803. 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 $437,424

Adjusted +$82,027 for 388 sqft more living space and +$8,914 for being newer. Net adjustment: +$90,941.

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 $447,607

Adjusted +$5,285 for 25 sqft more living space and +$11,143 for being newer. Net adjustment: +$16,428.

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 $380,651

Adjusted -$45,453 for 215 sqft less living space and +$4,457 for being newer. Net adjustment: -$40,996.

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 $463,803

Adjusted +$111,413 for 527 sqft more living space and +$4,457 for being newer. Net adjustment: +$115,870.

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 $436,896

Adjusted +$79,913 for 378 sqft more living space and +$8,914 for being newer. Net adjustment: +$88,827.

The Neighborhood

This home is in line with the H121413C - SIENA median of $406,354. 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
$405,269
Median
$406,354

This home is -0.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,329 across all districts. With a homestead exemption claimed, that drops to $7,567 — saving $1,762 per year. That's $631 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%$4,884
Siena MUD #1MUD0.5250%$2,128
Williamson CountyCounty0.3694%$1,497
Williamson County ESD #3 - HuttoESD0.1000%$405
Williamson County FM/RdCounty0.0443%$180
EWC Higher Ed Centerspecial0.0409%$166
Upper Brushy Creek WCIDWater0.0170%$69
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,329

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $437,424 would pay approximately $2,730 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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