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5644 SACCO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,596 sqftBuilt 2018

Property at a Glance

This home is estimated between $255,584 and $402,747, with a best estimate of $330,334. 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

$255,584 $402,747
Best Estimate
$330,334
WCAD Value
$339,098
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 $255,584 and $402,747. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

5832 PARMA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,706 sqft Built 2018
Raw Value $363,851
Adjusted Value $340,596

Adjusted -$23,255 for 110 sqft less living space. Net adjustment: -$23,255.

8010 MOZART ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,218 sqft Built 2018
Raw Value $420,296
Adjusted Value $288,799

Adjusted -$131,497 for 622 sqft less living space. Net adjustment: -$131,497.

7904 MOZART ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,734 sqft Built 2018
Raw Value $431,921
Adjusted Value $402,747

Adjusted -$29,174 for 138 sqft less living space. Net adjustment: -$29,174.

5609 SACCO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 3 bath 2,016 sqft Built 2018
Raw Value $419,126
Adjusted Value $330,334

Adjusted -$88,792 for 420 sqft less living space. Net adjustment: -$88,792.

8305 PAOLA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,328 sqft Built 2020
Raw Value $414,793
Adjusted Value $255,584

Adjusted -$154,752 for 732 sqft less living space and -$4,457 for being older. Net adjustment: -$159,209.

The Neighborhood

This home is valued 16.6% 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
$339,098
Median
$406,354

This home is -16.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,805 across all districts. With a homestead exemption claimed, that drops to $6,055 — saving $1,750 per year. That's $505 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%$4,087
Siena MUD #1MUD0.5250%$1,780
Williamson CountyCounty0.3694%$1,253
Williamson County ESD #9 - Round RockESD0.0999%$339
Williamson County FM/RdCounty0.0443%$150
EWC Higher Ed Centerspecial0.0409%$139
Upper Brushy Creek WCIDWater0.0170%$58
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$7,805

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $330,334 would pay approximately $2,062 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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