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5809 MANTALCINO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,767 sqftBuilt 2016

Property at a Glance

This home is estimated between $453,966 and $897,885, with a best estimate of $554,408. 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

$453,966 $897,885
Best Estimate
$554,408
WCAD Value
$450,519
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 $453,966 and $897,885. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

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 $486,858

Adjusted +$67,440 for 319 sqft more living space and -$2,229 for being older. Net adjustment: +$65,211.

4 bed 3 bath 2,470 sqft Built 2013
Raw Value $828,410
Adjusted Value $897,885

Adjusted +$62,789 for 297 sqft more living space and +$6,686 for being newer. Net adjustment: +$69,475.

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 $609,789

Adjusted +$186,040 for 880 sqft more living space. Net adjustment: +$186,040.

5905 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $554,408

Adjusted +$92,809 for 439 sqft more living space and +$2,229 for being newer. Net adjustment: +$95,038.

8002 AREZZO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,685 sqft Built 2018
Raw Value $441,087
Adjusted Value $453,966

Adjusted +$17,336 for 82 sqft more living space and -$4,457 for being older. Net adjustment: +$12,879.

The Neighborhood

This home is valued 10.9% 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
$450,519
Median
$406,354

This home is +10.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,370 across all districts. With a homestead exemption claimed, that drops to $8,600 — saving $1,770 per year. That's $717 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%$5,430
Siena MUD #1MUD0.5250%$2,365
Williamson CountyCounty0.3694%$1,664
Williamson County ESD #3 - HuttoESD0.1000%$451
Williamson County FM/RdCounty0.0443%$200
EWC Higher Ed Centerspecial0.0409%$184
Upper Brushy Creek WCIDWater0.0170%$77
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,370

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $554,408 would pay approximately $3,461 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 4/19/2026.

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