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6269 MANTALCINO LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,811 sqftBuilt 2018

Property at a Glance

This home is estimated between $364,289 and $560,505, with a best estimate of $371,774. 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

$364,289 $560,505
Best Estimate
$371,774
WCAD Value
$415,224
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $364,289 and $560,505. More comparables in the same subdivision would strengthen this estimate.

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 $369,087

Adjusted -$16,067 for 76 sqft less living space and +$4,457 for being newer. Net adjustment: -$11,610.

5810 LUCCA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,528 sqft Built 2018
Raw Value $334,847
Adjusted Value $394,676

Adjusted +$59,829 for 283 sqft more living space. Net adjustment: +$59,829.

3 bed 2 bath 1,939 sqft Built 2007
Raw Value $374,319
Adjusted Value $371,774

Adjusted -$27,060 for 128 sqft less living space and +$24,515 for being newer. Net adjustment: -$2,545.

3 bed 2 bath 1,960 sqft Built 2007
Raw Value $371,274
Adjusted Value $364,289

Adjusted -$31,500 for 149 sqft less living space and +$24,515 for being newer. Net adjustment: -$6,985.

6293 MANTALCINO LN, ROUND ROCK, TX 78665
0.00 mi 97% similar Same subdivision
3 bed 2 bath 897 sqft Built 2018
Raw Value $367,277
Adjusted Value $560,505

Adjusted +$193,228 for 914 sqft more living space. Net adjustment: +$193,228.

The Neighborhood

This home is valued 2.2% 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
$415,224
Median
$406,354

This home is +2.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,326 across all districts. With a homestead exemption claimed, that drops to $7,564 — saving $1,762 per year. That's $630 per month a buyer should budget. The assessed value increased +12.7% vs the subdivision average of -5.4%. This above-average increase gives a protest opportunity score of 75 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Hutto ISDSchool1.2052%$4,883
Siena MUD #1MUD0.5250%$2,127
Williamson CountyCounty0.3694%$1,497
Williamson County ESD #3 - HuttoESD0.1000%$405
Williamson County FM/RdCounty0.0443%$180
EWC Higher Ed Centerspecial0.0409%$166
Upper Brushy Creek WCIDWater0.0170%$69
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,326
75 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $371,774 would pay approximately $2,321 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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