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5620 SACCO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

5 bed4 bath1,628 sqftBuilt 2015

Property at a Glance

This home is estimated between $336,815 and $444,391, with a best estimate of $347,850. 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

$336,815 $444,391
Best Estimate
$347,850
WCAD Value
$499,025
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 $336,815 and $444,391. 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 $433,287

Adjusted -$25,369 for 120 sqft less living space and +$2,229 for being newer. Net adjustment: -$23,140.

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 $336,815

Adjusted +$3,805 for 18 sqft more living space and -$2,229 for being older. Net adjustment: +$1,576.

8100 ROSANO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,668 sqft Built 2015
Raw Value $349,872
Adjusted Value $341,416

Adjusted -$8,456 for 40 sqft less living space. Net adjustment: -$8,456.

6008 ANGELO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,666 sqft Built 2015
Raw Value $355,884
Adjusted Value $347,850

Adjusted -$8,034 for 38 sqft less living space. Net adjustment: -$8,034.

6057 ROMA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 4 bath 1,700 sqft Built 2014
Raw Value $457,383
Adjusted Value $444,391

Adjusted -$15,221 for 72 sqft less living space and +$2,229 for being newer. Net adjustment: -$12,992.

The Neighborhood

This home is valued 22.8% 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

above average
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$499,025
Median
$406,354

This home is +22.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,486 across all districts. With a homestead exemption claimed, that drops to $9,707 — saving $1,779 per year. That's $809 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%$6,014
Siena MUD #1MUD0.5250%$2,620
Williamson CountyCounty0.3694%$1,844
Williamson County ESD #9 - Round RockESD0.0999%$499
Williamson County FM/RdCounty0.0443%$221
EWC Higher Ed Centerspecial0.0409%$204
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$11,486

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $347,850 would pay approximately $2,171 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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