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5648 SACCO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,335 sqftBuilt 2015

Property at a Glance

This home is estimated between $289,687 and $529,211, with a best estimate of $416,120. 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

$289,687 $529,211
Best Estimate
$416,120
WCAD Value
$405,223
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 $289,687 and $529,211. 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 $371,344

Adjusted -$87,312 for 413 sqft less living space and +$2,229 for being newer. Net adjustment: -$85,083.

4 bed 1,326 sqft Built 2023
Raw Value $432,046
Adjusted Value $416,120

Adjusted +$1,903 for 9 sqft more living space and -$17,829 for being older. Net adjustment: -$15,926.

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 $529,211

Adjusted +$63,634 for 301 sqft more living space. Net adjustment: +$63,634.

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 $421,043

Adjusted -$2,537 for 12 sqft less living space. Net adjustment: -$2,537.

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 $289,687

Adjusted -$44,185 for 209 sqft less living space and -$4,457 for being older. Net adjustment: -$48,642.

The Neighborhood

This home is in line with the H121413C - SIENA median of $406,354. 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
$405,223
Median
$406,354

This home is -0.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,327 across all districts. With a homestead exemption claimed, that drops to $7,565 — saving $1,762 per year. That's $630 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%$4,884
Siena MUD #1MUD0.5250%$2,127
Williamson CountyCounty0.3694%$1,497
Williamson County ESD #9 - Round RockESD0.0999%$405
Williamson County FM/RdCounty0.0443%$180
EWC Higher Ed Centerspecial0.0409%$166
Upper Brushy Creek WCIDWater0.0170%$69
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,327

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $416,120 would pay approximately $2,597 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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