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

5624 SAMBUCO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,235 sqftBuilt 2017

Property at a Glance

This home is estimated between $402,510 and $484,413, with a best estimate of $442,754. 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

$402,510 $484,413
Best Estimate
$442,754
WCAD Value
$401,380
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 $402,510 and $484,413. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

7836 LEONARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,961 sqft Built 2017
Raw Value $379,331
Adjusted Value $437,257

Adjusted +$57,926 for 274 sqft more living space. Net adjustment: +$57,926.

5608 SAMBUCO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,173 sqft Built 2017
Raw Value $429,647
Adjusted Value $442,754

Adjusted +$13,107 for 62 sqft more living space. Net adjustment: +$13,107.

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 $484,413

Adjusted +$146,084 for 691 sqft more living space. Net adjustment: +$146,084.

5918 PARMA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,227 sqft Built 2015
Raw Value $396,362
Adjusted Value $402,510

Adjusted +$1,691 for 8 sqft more living space and +$4,457 for being newer. Net adjustment: +$6,148.

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 $469,599

Adjusted +$132,131 for 625 sqft more living space and +$2,229 for being newer. Net adjustment: +$134,360.

The Neighborhood

This home is valued 1.2% 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
$401,380
Median
$406,354

This home is -1.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,239 across all districts. With a homestead exemption claimed, that drops to $7,477 — saving $1,762 per year. That's $623 per month a buyer should budget. The assessed value increased +0.6% vs the subdivision average of -5.4%. This above-average increase gives a protest opportunity score of 30 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Hutto ISDSchool1.2052%$4,837
Siena MUD #1MUD0.5250%$2,107
Williamson CountyCounty0.3694%$1,483
Williamson County ESD #9 - Round RockESD0.0999%$401
Williamson County FM/RdCounty0.0443%$178
EWC Higher Ed Centerspecial0.0409%$164
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,239
30 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $442,754 would pay approximately $2,764 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