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

5828 MANTALCINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,686 sqftBuilt 2016

Property at a Glance

This home is estimated between $258,324 and $341,476, with a best estimate of $315,098. 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

$258,324 $341,476
Best Estimate
$315,098
WCAD Value
$363,910
High Confidence

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

Based on 5 comparable properties in H121413C - SIENA, this home's estimated market value is between $258,324 and $341,476. All 5 comparables are in the same subdivision, giving this estimate high confidence.

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 $315,098

Adjusted -$33,614 for 159 sqft less living space and +$2,229 for being newer. Net adjustment: -$31,385.

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 $325,280

Adjusted -$110,356 for 522 sqft less living space and +$4,457 for being newer. Net adjustment: -$105,899.

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 $258,324

Adjusted -$161,094 for 762 sqft less living space and -$2,229 for being older. Net adjustment: -$163,323.

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 $341,476

Adjusted -$4,228 for 20 sqft less living space and -$2,229 for being older. Net adjustment: -$6,457.

6117 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,855 sqft Built 2015
Raw Value $348,069
Adjusted Value $314,570

Adjusted -$35,728 for 169 sqft less living space and +$2,229 for being newer. Net adjustment: -$33,499.

The Neighborhood

This home is valued 10.4% 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
$363,910
Median
$406,354

This home is -10.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,377 across all districts. With a homestead exemption claimed, that drops to $6,622 — saving $1,755 per year. That's $552 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%$4,386
Siena MUD #1MUD0.5250%$1,911
Williamson CountyCounty0.3694%$1,344
Williamson County ESD #3 - HuttoESD0.1000%$364
Williamson County FM/RdCounty0.0443%$161
EWC Higher Ed Centerspecial0.0409%$149
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,377

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $315,098 would pay approximately $1,967 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.

View full property details