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8104 ROSANO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,347 sqftBuilt 2015

Property at a Glance

This home is estimated between $277,409 and $531,748, with a best estimate of $373,881. 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

$277,409 $531,748
Best Estimate
$373,881
WCAD Value
$423,580
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 $277,409 and $531,748. 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 $373,881

Adjusted -$84,775 for 401 sqft less living space and +$2,229 for being newer. Net adjustment: -$82,546.

4 bed 1,326 sqft Built 2023
Raw Value $432,046
Adjusted Value $418,657

Adjusted +$4,440 for 21 sqft more living space and -$17,829 for being older. Net adjustment: -$13,389.

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 $531,748

Adjusted +$66,171 for 313 sqft more living space. Net adjustment: +$66,171.

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 $292,224

Adjusted -$41,648 for 197 sqft less living space and -$4,457 for being older. Net adjustment: -$46,105.

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 $277,409

Adjusted -$55,601 for 263 sqft less living space and -$2,229 for being older. Net adjustment: -$57,830.

The Neighborhood

This home is valued 4.2% 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
$423,580
Median
$406,354

This home is +4.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,750 across all districts. With a homestead exemption claimed, that drops to $7,984 — saving $1,766 per year. That's $665 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%$5,105
Siena MUD #1MUD0.5250%$2,224
Williamson CountyCounty0.3694%$1,565
Williamson County ESD #9 - Round RockESD0.0999%$423
Williamson County FM/RdCounty0.0443%$188
EWC Higher Ed Centerspecial0.0409%$173
Upper Brushy Creek WCIDWater0.0170%$72
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,750

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $373,881 would pay approximately $2,334 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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