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5820 SARDINIA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,667 sqftBuilt 2015

Property at a Glance

This home is estimated between $308,324 and $339,587, with a best estimate of $335,231. 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

$308,324 $339,587
Best Estimate
$335,231
WCAD Value
$329,680
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 $308,324 and $339,587. 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 $339,587

Adjusted -$19,238 for 91 sqft less living space and +$2,229 for being newer. Net adjustment: -$17,009.

7945 BASSANO DR, ROUND ROCK, TX 78665
0.00 mi 98% similar Same subdivision
3 bed 2 bath 1,706 sqft Built 2017
Raw Value $347,933
Adjusted Value $335,231

Adjusted -$8,245 for 39 sqft less living space and -$4,457 for being older. Net adjustment: -$12,702.

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 $338,849

Adjusted -$28,329 for 134 sqft less living space. Net adjustment: -$28,329.

6108 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 97% similar Same subdivision
3 bed 2 bath 1,845 sqft Built 2015
Raw Value $346,483
Adjusted Value $308,852

Adjusted -$37,631 for 178 sqft less living space. Net adjustment: -$37,631.

6117 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 97% similar Same subdivision
3 bed 2 bath 1,855 sqft Built 2015
Raw Value $348,069
Adjusted Value $308,324

Adjusted -$39,745 for 188 sqft less living space. Net adjustment: -$39,745.

The Neighborhood

This home is valued 18.9% 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
$329,680
Median
$406,354

This home is -18.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,589 across all districts. With a homestead exemption claimed, that drops to $5,841 — saving $1,748 per year. That's $487 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%$3,973
Siena MUD #1MUD0.5250%$1,731
Williamson CountyCounty0.3694%$1,218
Williamson County ESD #3 - HuttoESD0.1000%$330
Williamson County FM/RdCounty0.0443%$146
EWC Higher Ed Centerspecial0.0409%$135
Upper Brushy Creek WCIDWater0.0170%$56
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$7,589

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $335,231 would pay approximately $2,093 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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