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5643 SABBIA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,685 sqftBuilt 2018

Property at a Glance

This home is estimated between $318,815 and $385,501, with a best estimate of $345,722. 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

$318,815 $385,501
Best Estimate
$345,722
WCAD Value
$449,401
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 $318,815 and $385,501. 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 $319,343

Adjusted -$33,826 for 160 sqft less living space and +$6,686 for being newer. Net adjustment: -$27,140.

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 $345,722

Adjusted -$4,440 for 21 sqft less living space and +$2,229 for being newer. Net adjustment: -$2,211.

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 $318,815

Adjusted -$35,940 for 170 sqft less living space and +$6,686 for being newer. Net adjustment: -$29,254.

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 $385,501

Adjusted -$42,705 for 202 sqft less living space and +$4,457 for being newer. Net adjustment: -$38,248.

8021 BASSANO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,801 sqft Built 2015
Raw Value $367,178
Adjusted Value $349,341

Adjusted -$24,523 for 116 sqft less living space and +$6,686 for being newer. Net adjustment: -$17,837.

The Neighborhood

This home is valued 10.6% 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
$449,401
Median
$406,354

This home is +10.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,344 across all districts. With a homestead exemption claimed, that drops to $8,574 — saving $1,770 per year. That's $715 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%$5,416
Siena MUD #1MUD0.5250%$2,359
Williamson CountyCounty0.3694%$1,660
Williamson County ESD #9 - Round RockESD0.0999%$449
Williamson County FM/RdCounty0.0443%$199
EWC Higher Ed Centerspecial0.0409%$184
Upper Brushy Creek WCIDWater0.0170%$76
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,344

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $345,722 would pay approximately $2,158 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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