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5825 SARDINIA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

5 bed3 bath2,009 sqftBuilt 2015

Property at a Glance

This home is estimated between $391,930 and $717,156, with a best estimate of $447,312. That places the property above the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$391,930 $717,156
Best Estimate
$447,312
WCAD Value
$404,900
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $391,930 and $717,156. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

6101 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 95% similar Same subdivision
4 bed 3 bath 1,887 sqft Built 2016
Raw Value $423,749
Adjusted Value $447,312

Adjusted +$25,792 for 122 sqft more living space and -$2,229 for being older. Net adjustment: +$23,563.

5 bed 3 bath 2,301 sqft Built 2021
Raw Value $792,260
Adjusted Value $717,156

Adjusted -$61,732 for 292 sqft less living space and -$13,372 for being older. Net adjustment: -$75,104.

3 bed 2 bath 1,758 sqft Built 2014
Raw Value $356,596
Adjusted Value $411,889

Adjusted +$53,064 for 251 sqft more living space and +$2,229 for being newer. Net adjustment: +$55,293.

7832 LEONARDO DR, ROUND ROCK, TX 78665
0.00 mi 89% similar Same subdivision
4 bed 3 bath 1,575 sqft Built 2017
Raw Value $499,392
Adjusted Value $586,687

Adjusted +$91,752 for 434 sqft more living space and -$4,457 for being older. Net adjustment: +$87,295.

5905 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 89% similar Same subdivision
4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $391,930

Adjusted -$67,440 for 319 sqft less living space. Net adjustment: -$67,440.

The Neighborhood

This home is in line with the H121413C - SIENA median of $406,354. 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
$404,900
Median
$406,354

This home is -0.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,320 across all districts. With a homestead exemption claimed, that drops to $7,558 — saving $1,762 per year. That's $630 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%$4,880
Siena MUD #1MUD0.5250%$2,126
Williamson CountyCounty0.3694%$1,496
Williamson County ESD #3 - HuttoESD0.1000%$405
Williamson County FM/RdCounty0.0443%$179
EWC Higher Ed Centerspecial0.0409%$165
Upper Brushy Creek WCIDWater0.0170%$69
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,320

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $447,312 would pay approximately $2,792 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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