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8012 MASSA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,537 sqftBuilt 2017

Property at a Glance

This home is estimated between $229,053 and $312,205, with a best estimate of $285,826. 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

$229,053 $312,205
Best Estimate
$285,826
WCAD Value
$334,221
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 $229,053 and $312,205. 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 $285,826

Adjusted -$65,114 for 308 sqft less living space and +$4,457 for being newer. Net adjustment: -$60,657.

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 $296,009

Adjusted -$141,856 for 671 sqft less living space and +$6,686 for being newer. Net adjustment: -$135,170.

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 $229,053

Adjusted -$192,594 for 911 sqft less living space. Net adjustment: -$192,594.

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 $312,205

Adjusted -$35,728 for 169 sqft less living space. Net adjustment: -$35,728.

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 $285,298

Adjusted -$67,228 for 318 sqft less living space and +$4,457 for being newer. Net adjustment: -$62,771.

The Neighborhood

This home is valued 17.8% 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

below average
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$334,221
Median
$406,354

This home is -17.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,693 across all districts. With a homestead exemption claimed, that drops to $5,944 — saving $1,749 per year. That's $495 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%$4,028
Siena MUD #1MUD0.5250%$1,755
Williamson CountyCounty0.3694%$1,235
Williamson County ESD #3 - HuttoESD0.1000%$334
Williamson County FM/RdCounty0.0443%$148
EWC Higher Ed Centerspecial0.0409%$137
Upper Brushy Creek WCIDWater0.0170%$57
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$7,693

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $285,826 would pay approximately $1,784 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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