Beta Williamson County, TX only — data and coverage are limited during early access.

5804 SARDINIA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,787 sqftBuilt 2015

Property at a Glance

This home is estimated between $333,693 and $364,956, with a best estimate of $360,600. 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

$333,693 $364,956
Best Estimate
$360,600
WCAD Value
$344,437
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 $333,693 and $364,956. 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 $364,956

Adjusted +$6,131 for 29 sqft more living space and +$2,229 for being newer. Net adjustment: +$8,360.

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 $364,218

Adjusted -$2,960 for 14 sqft less living space. Net adjustment: -$2,960.

6108 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
3 bed 2 bath 1,845 sqft Built 2015
Raw Value $346,483
Adjusted Value $334,221

Adjusted -$12,262 for 58 sqft less living space. Net adjustment: -$12,262.

6117 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
3 bed 2 bath 1,855 sqft Built 2015
Raw Value $348,069
Adjusted Value $333,693

Adjusted -$14,376 for 68 sqft less living space. Net adjustment: -$14,376.

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 $360,600

Adjusted +$17,124 for 81 sqft more living space and -$4,457 for being older. Net adjustment: +$12,667.

The Neighborhood

This home is valued 15.2% 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
$344,437
Median
$406,354

This home is -15.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,928 across all districts. With a homestead exemption claimed, that drops to $6,178 — saving $1,750 per year. That's $515 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%$4,151
Siena MUD #1MUD0.5250%$1,808
Williamson CountyCounty0.3694%$1,273
Williamson County ESD #3 - HuttoESD0.1000%$344
Williamson County FM/RdCounty0.0443%$153
EWC Higher Ed Centerspecial0.0409%$141
Upper Brushy Creek WCIDWater0.0170%$59
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$7,928

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $360,600 would pay approximately $2,251 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 4/19/2026.

View full property details