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6285 MANTALCINO LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,936 sqftBuilt 2019

Property at a Glance

This home is estimated between $392,943 and $701,410, with a best estimate of $400,428. 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

$392,943 $701,410
Best Estimate
$400,428
WCAD Value
$361,645
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 $392,943 and $701,410 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,939 sqft Built 2007
Raw Value $374,319
Adjusted Value $400,428

Adjusted -$634 for 3 sqft less living space and +$26,743 for being newer. Net adjustment: +$26,109.

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 $397,742

Adjusted +$10,359 for 49 sqft more living space and +$6,686 for being newer. Net adjustment: +$17,045.

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 $423,331

Adjusted +$86,255 for 408 sqft more living space and +$2,229 for being newer. Net adjustment: +$88,484.

3 bed 2 bath 1,960 sqft Built 2007
Raw Value $371,274
Adjusted Value $392,943

Adjusted -$5,074 for 24 sqft less living space and +$26,743 for being newer. Net adjustment: +$21,669.

3 bed 2,039 sqft Built 2011
Raw Value $705,356
Adjusted Value $701,410

Adjusted -$21,775 for 103 sqft less living space and +$17,829 for being newer. Net adjustment: -$3,946.

The Neighborhood

This home is valued 11.0% 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
$361,645
Median
$406,354

This home is -11.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,325 across all districts. With a homestead exemption claimed, that drops to $6,570 — saving $1,755 per year. That's $548 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%$4,359
Siena MUD #1MUD0.5250%$1,899
Williamson CountyCounty0.3694%$1,336
Williamson County ESD #3 - HuttoESD0.1000%$362
Williamson County FM/RdCounty0.0443%$160
EWC Higher Ed Centerspecial0.0409%$148
Upper Brushy Creek WCIDWater0.0170%$61
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,325

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $400,428 would pay approximately $2,499 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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