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6117 MANTALCINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,855 sqftBuilt 2015

Property at a Glance

This home is estimated between $291,824 and $427,093, with a best estimate of $358,780. 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

$291,824 $427,093
Best Estimate
$358,780
WCAD Value
$348,069
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 $291,824 and $427,093. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3 bed 2 bath 1,840 sqft Built 2007
Raw Value $406,093
Adjusted Value $427,093

Adjusted +$3,171 for 15 sqft more living space and +$17,829 for being newer. Net adjustment: +$21,000.

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 $348,597

Adjusted +$2,114 for 10 sqft more living space. Net adjustment: +$2,114.

8206 AREZZO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,208 sqft Built 2014
Raw Value $431,179
Adjusted Value $358,780

Adjusted -$74,628 for 353 sqft less living space and +$2,229 for being newer. Net adjustment: -$72,399.

5857 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,448 sqft Built 2017
Raw Value $421,647
Adjusted Value $291,824

Adjusted -$125,366 for 593 sqft less living space and -$4,457 for being older. Net adjustment: -$129,823.

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 $374,976

Adjusted +$31,500 for 149 sqft more living space and -$4,457 for being older. Net adjustment: +$27,043.

The Neighborhood

This home is valued 14.3% 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

typical
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$348,069
Median
$406,354

This home is -14.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,012 across all districts. With a homestead exemption claimed, that drops to $6,260 — saving $1,752 per year. That's $522 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%$4,195
Siena MUD #1MUD0.5250%$1,827
Williamson CountyCounty0.3694%$1,286
Williamson County ESD #3 - HuttoESD0.1000%$348
Williamson County FM/RdCounty0.0443%$154
EWC Higher Ed Centerspecial0.0409%$142
Upper Brushy Creek WCIDWater0.0170%$59
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,012

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $358,780 would pay approximately $2,239 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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