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5800 SABBIA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,586 sqftBuilt 2017

Property at a Glance

This home is estimated between $295,657 and $362,344, with a best estimate of $306,368. That places the property below the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$295,657 $362,344
Best Estimate
$306,368
WCAD Value
$450,825
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 $295,657 and $362,344. 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 $296,185

Adjusted -$54,755 for 259 sqft less living space and +$4,457 for being newer. Net adjustment: -$50,298.

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 $306,368

Adjusted -$131,497 for 622 sqft less living space and +$6,686 for being newer. Net adjustment: -$124,811.

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 $322,564

Adjusted -$25,369 for 120 sqft less living space. Net adjustment: -$25,369.

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 $295,657

Adjusted -$56,869 for 269 sqft less living space and +$4,457 for being newer. Net adjustment: -$52,412.

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 $362,344

Adjusted -$63,634 for 301 sqft less living space and +$2,229 for being newer. Net adjustment: -$61,405.

The Neighborhood

This home is valued 10.9% 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
$450,825
Median
$406,354

This home is +10.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,377 across all districts. With a homestead exemption claimed, that drops to $8,606 — saving $1,771 per year. That's $717 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%$5,433
Siena MUD #1MUD0.5250%$2,367
Williamson CountyCounty0.3694%$1,666
Williamson County ESD #9 - Round RockESD0.0999%$450
Williamson County FM/RdCounty0.0443%$200
EWC Higher Ed Centerspecial0.0409%$184
Upper Brushy Creek WCIDWater0.0170%$77
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,377

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $306,368 would pay approximately $1,912 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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