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5808 SABBIA CT, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,019 sqftBuilt 2017

Property at a Glance

This home is estimated between $567,368 and $678,246, with a best estimate of $624,110. 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

$567,368 $678,246
Best Estimate
$624,110
WCAD Value
$409,295
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in H121413C - SIENA. The estimated range of $567,368 and $678,246 should be treated as a rough guide.

Comparable Properties (5)

5815 SABBIA CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,404 sqft Built 2018
Raw Value $439,580
Adjusted Value $567,368

Adjusted +$130,017 for 615 sqft more living space and -$2,229 for being older. Net adjustment: +$127,788.

4 bed 3 bath 1,921 sqft Built 2017
Raw Value $552,500
Adjusted Value $573,218

Adjusted +$20,718 for 98 sqft more living space. Net adjustment: +$20,718.

4 bed 3 bath 1,963 sqft Built 2007
Raw Value $630,342
Adjusted Value $664,467

Adjusted +$11,839 for 56 sqft more living space and +$22,286 for being newer. Net adjustment: +$34,125.

4 bed 3 bath 1,891 sqft Built 2009
Raw Value $579,221
Adjusted Value $624,110

Adjusted +$27,060 for 128 sqft more living space and +$17,829 for being newer. Net adjustment: +$44,889.

4 bed 3 bath 1,759 sqft Built 2012
Raw Value $612,137
Adjusted Value $678,246

Adjusted +$54,966 for 260 sqft more living space and +$11,143 for being newer. Net adjustment: +$66,109.

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
$409,295
Median
$406,354

This home is +0.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,421 across all districts. With a homestead exemption claimed, that drops to $7,658 — saving $1,763 per year. That's $638 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%$4,933
Siena MUD #1MUD0.5250%$2,149
Williamson CountyCounty0.3694%$1,512
Williamson County ESD #9 - Round RockESD0.0999%$409
Williamson County FM/RdCounty0.0443%$181
EWC Higher Ed Centerspecial0.0409%$167
Upper Brushy Creek WCIDWater0.0170%$70
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,421

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $624,110 would pay approximately $3,896 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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