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5909 SARDINIA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,962 sqftBuilt 2014

Property at a Glance

This home is estimated between $324,560 and $399,724, with a best estimate of $368,989. 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

$324,560 $399,724
Best Estimate
$368,989
WCAD Value
$341,900
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $324,560 and $399,724. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3 bed 2 bath 1,758 sqft Built 2014
Raw Value $356,596
Adjusted Value $399,724

Adjusted +$43,128 for 204 sqft more living space. Net adjustment: +$43,128.

6117 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 98% similar Same subdivision
3 bed 2 bath 1,855 sqft Built 2015
Raw Value $348,069
Adjusted Value $368,461

Adjusted +$22,621 for 107 sqft more living space and -$2,229 for being older. Net adjustment: +$20,392.

6108 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 98% similar Same subdivision
3 bed 2 bath 1,845 sqft Built 2015
Raw Value $346,483
Adjusted Value $368,989

Adjusted +$24,735 for 117 sqft more living space and -$2,229 for being older. Net adjustment: +$22,506.

8021 BASSANO DR, ROUND ROCK, TX 78665
0.00 mi 97% similar Same subdivision
3 bed 2 bath 1,801 sqft Built 2015
Raw Value $367,178
Adjusted Value $398,986

Adjusted +$34,037 for 161 sqft more living space and -$2,229 for being older. Net adjustment: +$31,808.

7942 AREZZO DR, ROUND ROCK, TX 78665
0.00 mi 97% similar Same subdivision
3 bed 2 bath 2,087 sqft Built 2017
Raw Value $357,672
Adjusted Value $324,560

Adjusted -$26,426 for 125 sqft less living space and -$6,686 for being older. Net adjustment: -$33,112.

The Neighborhood

This home is valued 15.9% below the H121413C - SIENA median of $406,354. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 5.4% over the past year.

H121413C - SIENA

below average
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$341,900
Median
$406,354

This home is -15.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,870 across all districts. With a homestead exemption claimed, that drops to $6,120 — saving $1,750 per year. That's $510 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%$4,121
Siena MUD #1MUD0.5250%$1,795
Williamson CountyCounty0.3694%$1,263
Williamson County ESD #3 - HuttoESD0.1000%$342
Williamson County FM/RdCounty0.0443%$152
EWC Higher Ed Centerspecial0.0409%$140
Upper Brushy Creek WCIDWater0.0170%$58
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$7,870

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $368,989 would pay approximately $2,303 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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