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

5625 SACCO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,835 sqftBuilt 2018

Property at a Glance

This home is estimated between $306,111 and $453,273, with a best estimate of $380,861. 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

$306,111 $453,273
Best Estimate
$380,861
WCAD Value
$369,093
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 $306,111 and $453,273. 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 $391,123

Adjusted +$27,272 for 129 sqft more living space. Net adjustment: +$27,272.

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 $339,326

Adjusted -$80,970 for 383 sqft less living space. Net adjustment: -$80,970.

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 $453,273

Adjusted +$21,352 for 101 sqft more living space. Net adjustment: +$21,352.

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 $380,861

Adjusted -$38,265 for 181 sqft less living space. Net adjustment: -$38,265.

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 $306,111

Adjusted -$104,225 for 493 sqft less living space and -$4,457 for being older. Net adjustment: -$108,682.

The Neighborhood

This home is valued 9.2% 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

typical
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$369,093
Median
$406,354

This home is -9.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,496 across all districts. With a homestead exemption claimed, that drops to $6,740 — saving $1,756 per year. That's $562 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%$4,448
Siena MUD #1MUD0.5250%$1,938
Williamson CountyCounty0.3694%$1,364
Williamson County ESD #9 - Round RockESD0.0999%$369
Williamson County FM/RdCounty0.0443%$164
EWC Higher Ed Centerspecial0.0409%$151
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,496

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $380,861 would pay approximately $2,377 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