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5936 AGOSTINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,262 sqftBuilt 2019

Property at a Glance

This home is estimated between $353,890 and $509,714, with a best estimate of $453,738. 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

$353,890 $509,714
Best Estimate
$453,738
WCAD Value
$432,560
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 $353,890 and $509,714. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $453,738

Adjusted +$11,416 for 54 sqft more living space and +$11,143 for being newer. Net adjustment: +$22,559.

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 $386,782

Adjusted -$39,322 for 186 sqft less living space and +$4,457 for being newer. Net adjustment: -$34,865.

6101 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,887 sqft Built 2016
Raw Value $423,749
Adjusted Value $509,714

Adjusted +$79,279 for 375 sqft more living space and +$6,686 for being newer. Net adjustment: +$85,965.

5905 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $454,331

Adjusted -$13,953 for 66 sqft less living space and +$8,914 for being newer. Net adjustment: -$5,039.

8002 AREZZO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,685 sqft Built 2018
Raw Value $441,087
Adjusted Value $353,890

Adjusted -$89,426 for 423 sqft less living space and +$2,229 for being newer. Net adjustment: -$87,197.

The Neighborhood

This home is valued 6.4% 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
$432,560
Median
$406,354

This home is +6.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,957 across all districts. With a homestead exemption claimed, that drops to $8,190 — saving $1,767 per year. That's $683 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%$5,213
Siena MUD #1MUD0.5250%$2,271
Williamson CountyCounty0.3694%$1,598
Williamson County ESD #3 - HuttoESD0.1000%$433
Williamson County FM/RdCounty0.0443%$192
EWC Higher Ed Centerspecial0.0409%$177
Upper Brushy Creek WCIDWater0.0170%$74
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,957

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $453,738 would pay approximately $2,832 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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