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5836 MANTALCINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,866 sqftBuilt 2016

Property at a Glance

This home is estimated between $296,378 and $431,648, with a best estimate of $363,334. 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

$296,378 $431,648
Best Estimate
$363,334
WCAD Value
$368,211
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 $296,378 and $431,648. 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 $431,648

Adjusted +$5,497 for 26 sqft more living space and +$20,058 for being newer. Net adjustment: +$25,555.

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 $353,152

Adjusted +$4,440 for 21 sqft more living space and +$2,229 for being newer. Net adjustment: +$6,669.

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 $363,334

Adjusted -$72,302 for 342 sqft less living space and +$4,457 for being newer. Net adjustment: -$67,845.

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 $296,378

Adjusted -$123,040 for 582 sqft less living space and -$2,229 for being older. Net adjustment: -$125,269.

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 $379,530

Adjusted +$33,826 for 160 sqft more living space and -$2,229 for being older. Net adjustment: +$31,597.

The Neighborhood

This home is valued 9.4% 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
$368,211
Median
$406,354

This home is -9.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,476 across all districts. With a homestead exemption claimed, that drops to $6,720 — saving $1,756 per year. That's $560 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%$4,438
Siena MUD #1MUD0.5250%$1,933
Williamson CountyCounty0.3694%$1,360
Williamson County ESD #3 - HuttoESD0.1000%$368
Williamson County FM/RdCounty0.0443%$163
EWC Higher Ed Centerspecial0.0409%$150
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,476

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $363,334 would pay approximately $2,268 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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