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8021 MOZART ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,613 sqftBuilt 2016

Property at a Glance

This home is estimated between $303,532 and $590,212, with a best estimate of $432,344. That places the property above the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$303,532 $590,212
Best Estimate
$432,344
WCAD Value
$342,949
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 $303,532 and $590,212. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

6041 ROMA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,748 sqft Built 2014
Raw Value $456,427
Adjusted Value $432,344

Adjusted -$28,540 for 135 sqft less living space and +$4,457 for being newer. Net adjustment: -$24,083.

8128 ROSANO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,034 sqft Built 2015
Raw Value $465,577
Adjusted Value $590,212

Adjusted +$122,406 for 579 sqft more living space and +$2,229 for being newer. Net adjustment: +$124,635.

8104 ROSANO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,347 sqft Built 2015
Raw Value $423,580
Adjusted Value $482,044

Adjusted +$56,235 for 266 sqft more living space and +$2,229 for being newer. Net adjustment: +$58,464.

7836 LEONARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,961 sqft Built 2017
Raw Value $379,331
Adjusted Value $303,532

Adjusted -$73,570 for 348 sqft less living space and -$2,229 for being older. Net adjustment: -$75,799.

5608 SAMBUCO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,173 sqft Built 2017
Raw Value $429,647
Adjusted Value $309,029

Adjusted -$118,389 for 560 sqft less living space and -$2,229 for being older. Net adjustment: -$120,618.

The Neighborhood

This home is valued 15.6% 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

below average
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$342,949
Median
$406,354

This home is -15.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,894 across all districts. With a homestead exemption claimed, that drops to $6,144 — saving $1,750 per year. That's $512 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%$4,133
Siena MUD #1MUD0.5250%$1,800
Williamson CountyCounty0.3694%$1,267
Williamson County ESD #3 - HuttoESD0.1000%$343
Williamson County FM/RdCounty0.0443%$152
EWC Higher Ed Centerspecial0.0409%$140
Upper Brushy Creek WCIDWater0.0170%$58
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$7,894

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $432,344 would pay approximately $2,699 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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