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

8065 MOZART ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,335 sqftBuilt 2016

Property at a Glance

This home is estimated between $277,101 and $423,272, with a best estimate of $373,572. 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

$277,101 $423,272
Best Estimate
$373,572
WCAD Value
$411,929
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $277,101 and $423,272. More comparables in the same subdivision would strengthen this estimate.

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 $373,572

Adjusted -$87,312 for 413 sqft less living space and +$4,457 for being newer. Net adjustment: -$82,855.

4 bed 1,326 sqft Built 2023
Raw Value $432,046
Adjusted Value $418,349

Adjusted +$1,903 for 9 sqft more living space and -$15,600 for being older. Net adjustment: -$13,697.

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 $423,272

Adjusted -$2,537 for 12 sqft less living space and +$2,229 for being newer. Net adjustment: -$308.

5637 SACCO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,544 sqft Built 2017
Raw Value $338,329
Adjusted Value $291,915

Adjusted -$44,185 for 209 sqft less living space and -$2,229 for being older. Net adjustment: -$46,414.

8050 MOZART ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,610 sqft Built 2016
Raw Value $335,239
Adjusted Value $277,101

Adjusted -$58,138 for 275 sqft less living space. Net adjustment: -$58,138.

The Neighborhood

This home is valued 1.4% above the H121413C - SIENA median of $406,354. With 1,611 homes in the subdivision, the property sits in the upper tier. 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
$411,929
Median
$406,354

This home is +1.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,482 across all districts. With a homestead exemption claimed, that drops to $7,719 — saving $1,763 per year. That's $643 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%$4,965
Siena MUD #1MUD0.5250%$2,163
Williamson CountyCounty0.3694%$1,522
Williamson County ESD #3 - HuttoESD0.1000%$412
Williamson County FM/RdCounty0.0443%$183
EWC Higher Ed Centerspecial0.0409%$168
Upper Brushy Creek WCIDWater0.0170%$70
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,482

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $373,572 would pay approximately $2,332 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