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8036 MASSA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,927 sqftBuilt 2017

Property at a Glance

This home is estimated between $311,503 and $394,654, with a best estimate of $368,276. 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

$311,503 $394,654
Best Estimate
$368,276
WCAD Value
$371,524
High Confidence

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

Based on 5 comparable properties in H121413C - SIENA, this home's estimated market value is between $311,503 and $394,654. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $368,276

Adjusted +$17,336 for 82 sqft more living space and +$4,457 for being newer. Net adjustment: +$21,793.

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 $378,459

Adjusted -$59,406 for 281 sqft less living space and +$6,686 for being newer. Net adjustment: -$52,720.

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 $311,503

Adjusted -$110,144 for 521 sqft less living space. Net adjustment: -$110,144.

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 $394,654

Adjusted +$46,721 for 221 sqft more living space. Net adjustment: +$46,721.

6117 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,855 sqft Built 2015
Raw Value $348,069
Adjusted Value $367,747

Adjusted +$15,221 for 72 sqft more living space and +$4,457 for being newer. Net adjustment: +$19,678.

The Neighborhood

This home is valued 8.6% 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
$371,524
Median
$406,354

This home is -8.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,552 across all districts. With a homestead exemption claimed, that drops to $6,796 — saving $1,756 per year. That's $566 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%$4,478
Siena MUD #1MUD0.5250%$1,951
Williamson CountyCounty0.3694%$1,373
Williamson County ESD #3 - HuttoESD0.1000%$372
Williamson County FM/RdCounty0.0443%$165
EWC Higher Ed Centerspecial0.0409%$152
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,552

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $368,276 would pay approximately $2,299 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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