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6205 MANTALCINO LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,107 sqftBuilt 2019

Property at a Glance

This home is estimated between $433,893 and $616,948, with a best estimate of $459,482. 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

$433,893 $616,948
Best Estimate
$459,482
WCAD Value
$414,021
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in H121413C - SIENA. The estimated range of $433,893 and $616,948 should be treated as a rough guide.

Comparable Properties (5)

5715 ARBIA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,887 sqft Built 2016
Raw Value $380,697
Adjusted Value $433,893

Adjusted +$46,510 for 220 sqft more living space and +$6,686 for being newer. Net adjustment: +$53,196.

4 bed 3 bath 2,462 sqft Built 2017
Raw Value $512,679
Adjusted Value $442,086

Adjusted -$75,050 for 355 sqft less living space and +$4,457 for being newer. Net adjustment: -$70,593.

4 bed 3 bath 1,851 sqft Built 2012
Raw Value $547,227
Adjusted Value $616,948

Adjusted +$54,121 for 256 sqft more living space and +$15,600 for being newer. Net adjustment: +$69,721.

4 bed 3 bath 2,325 sqft Built 2006
Raw Value $625,489
Adjusted Value $608,374

Adjusted -$46,087 for 218 sqft less living space and +$28,972 for being newer. Net adjustment: -$17,115.

5810 LUCCA LN, ROUND ROCK, TX 78665
0.00 mi 96% similar Same subdivision
3 bed 2 bath 1,528 sqft Built 2018
Raw Value $334,847
Adjusted Value $459,482

Adjusted +$122,406 for 579 sqft more living space and +$2,229 for being newer. Net adjustment: +$124,635.

The Neighborhood

This home is valued 1.9% 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
$414,021
Median
$406,354

This home is +1.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,530 across all districts. With a homestead exemption claimed, that drops to $7,766 — saving $1,764 per year. That's $647 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%$4,990
Siena MUD #1MUD0.5250%$2,174
Williamson CountyCounty0.3694%$1,530
Williamson County ESD #3 - HuttoESD0.1000%$414
Williamson County FM/RdCounty0.0443%$184
EWC Higher Ed Centerspecial0.0409%$169
Upper Brushy Creek WCIDWater0.0170%$70
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,530

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $459,482 would pay approximately $2,868 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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