Beta Williamson County, TX only — data and coverage are limited during early access.

8016 MASSA DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,038 sqftBuilt 2016

Property at a Glance

This home is estimated between $188,881 and $383,636, with a best estimate of $208,102. 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

$188,881 $383,636
Best Estimate
$208,102
WCAD Value
$397,630
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 $188,881 and $383,636. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

7832 LEONARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,575 sqft Built 2017
Raw Value $499,392
Adjusted Value $383,636

Adjusted -$113,527 for 537 sqft less living space and -$2,229 for being older. Net adjustment: -$115,756.

6101 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
4 bed 3 bath 1,887 sqft Built 2016
Raw Value $423,749
Adjusted Value $244,262

Adjusted -$179,487 for 849 sqft less living space. Net adjustment: -$179,487.

7945 BASSANO DR, ROUND ROCK, TX 78665
0.00 mi 92% similar Same subdivision
3 bed 2 bath 1,706 sqft Built 2017
Raw Value $347,933
Adjusted Value $204,483

Adjusted -$141,221 for 668 sqft less living space and -$2,229 for being older. Net adjustment: -$143,450.

5905 MANTALCINO DR, ROUND ROCK, TX 78665
0.00 mi 92% similar Same subdivision
4 bed 4 bath 2,328 sqft Built 2015
Raw Value $459,370
Adjusted Value $188,881

Adjusted -$272,718 for 1,290 sqft less living space and +$2,229 for being newer. Net adjustment: -$270,489.

8021 BASSANO DR, ROUND ROCK, TX 78665
0.00 mi 91% similar Same subdivision
3 bed 2 bath 1,801 sqft Built 2015
Raw Value $367,178
Adjusted Value $208,102

Adjusted -$161,305 for 763 sqft less living space and +$2,229 for being newer. Net adjustment: -$159,076.

The Neighborhood

This home is valued 2.1% 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
$397,630
Median
$406,354

This home is -2.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,153 across all districts. With a homestead exemption claimed, that drops to $7,392 — saving $1,761 per year. That's $616 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%$4,792
Siena MUD #1MUD0.5250%$2,088
Williamson CountyCounty0.3694%$1,469
Williamson County ESD #3 - HuttoESD0.1000%$398
Williamson County FM/RdCounty0.0443%$176
EWC Higher Ed Centerspecial0.0409%$163
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,153

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $208,102 would pay approximately $1,299 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.

View full property details