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

324 SOUTHERN CARINA DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed4 bath2,872 sqftBuilt 2015

Property at a Glance

This home is estimated between $459,517 and $749,655, with a best estimate of $697,609. That places the property below the R304615B - HIGHLAND HORIZON PH3 median of $1,296,229, in a neighborhood that declined 3.4% over the past year.

Estimated Value Range

$459,517 $749,655
Best Estimate
$697,609
WCAD Value
$1,387,158
Low Confidence

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

There are 5 comparable properties within range, but few are in R304615B - HIGHLAND HORIZON PH3. The estimated range of $459,517 and $749,655 should be treated as a rough guide.

Comparable Properties (5)

108 LANDS END CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 4 bath 3,980 sqft Built 2016
Raw Value $1,227,702
Adjusted Value $749,655

Adjusted -$478,047 for 1,108 sqft less living space. Net adjustment: -$478,047.

4 bed 3 bath 3,156 sqft Built 2000
Raw Value $821,031
Adjusted Value $698,499

Adjusted -$122,532 for 284 sqft less living space. Net adjustment: -$122,532.

4 bed 2 bath 2,948 sqft Built 1999
Raw Value $492,307
Adjusted Value $459,517

Adjusted -$32,790 for 76 sqft less living space. Net adjustment: -$32,790.

3 bed 2 bath 3,206 sqft Built 2016
Raw Value $618,495
Adjusted Value $474,391

Adjusted -$144,104 for 334 sqft less living space. Net adjustment: -$144,104.

4 bed 3 bath 2,356 sqft Built 2000
Raw Value $474,981
Adjusted Value $697,609

Adjusted +$222,628 for 516 sqft more living space. Net adjustment: +$222,628.

The Neighborhood

This home is valued 7.0% above the R304615B - HIGHLAND HORIZON PH3 median of $1,296,229. With 27 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 3.4% over the past year.

R304615B - HIGHLAND HORIZON PH3

typical
27 Properties
$1,296,229 Median Value
-3.4% YoY Change
0% Have Pool
100% Have Garage
This Home
$1,387,158
Median
$1,296,229

This home is +7.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $27,586 across all districts. With a homestead exemption claimed, that drops to $26,081 — saving $1,505 per year. That's $2,173 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
Round Rock ISDSchool0.8931%$12,293
Brushy Creek MUDMUD0.3868%$5,325
Williamson CountyCounty0.3694%$5,085
Austin Community Collegespecial0.1034%$1,423
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,376
Brushy Creek MUD Defined AreaMUD0.0900%$1,239
Williamson County FM/RdCounty0.0443%$610
Upper Brushy Creek WCIDWater0.0170%$234
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$27,586

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $697,609 would pay approximately $4,354 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