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5912 MANTALCINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,521 sqftBuilt 2015

Property at a Glance

This home is estimated between $277,986 and $519,159, with a best estimate of $307,983. 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

$277,986 $519,159
Best Estimate
$307,983
WCAD Value
$437,468
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 $277,986 and $519,159. More comparables in the same subdivision would strengthen this estimate.

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 $277,986

Adjusted -$68,497 for 324 sqft less living space. Net adjustment: -$68,497.

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 $304,365

Adjusted -$39,111 for 185 sqft less living space and -$4,457 for being older. Net adjustment: -$43,568.

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 $344,144

Adjusted -$77,376 for 366 sqft less living space and -$2,229 for being older. Net adjustment: -$79,605.

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 $307,983

Adjusted -$59,195 for 280 sqft less living space. Net adjustment: -$59,195.

4 bed 3 bath 1,658 sqft Built 2011
Raw Value $539,208
Adjusted Value $519,159

Adjusted -$28,963 for 137 sqft less living space and +$8,914 for being newer. Net adjustment: -$20,049.

The Neighborhood

This home is valued 7.7% 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
$437,468
Median
$406,354

This home is +7.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,070 across all districts. With a homestead exemption claimed, that drops to $8,302 — saving $1,768 per year. That's $692 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%$5,272
Siena MUD #1MUD0.5250%$2,297
Williamson CountyCounty0.3694%$1,616
Williamson County ESD #3 - HuttoESD0.1000%$437
Williamson County FM/RdCounty0.0443%$194
EWC Higher Ed Centerspecial0.0409%$179
Upper Brushy Creek WCIDWater0.0170%$74
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,070

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $307,983 would pay approximately $1,922 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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