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

316 SOUTHERN CARINA DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed5 bath2,711 sqftBuilt 2016

Property at a Glance

This home is estimated between $639,274 and $1,030,405, with a best estimate of $996,926. 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

$639,274 $1,030,405
Best Estimate
$996,926
WCAD Value
$1,255,532
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 $639,274 and $1,030,405 should be treated as a rough guide.

Comparable Properties (5)

312 SOUTHERN CARINA DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 4 bath 3,529 sqft Built 2016
Raw Value $1,349,852
Adjusted Value $996,926

Adjusted -$352,926 for 818 sqft less living space. Net adjustment: -$352,926.

4 bed 3 bath 2,166 sqft Built 2013
Raw Value $795,265
Adjusted Value $1,030,405

Adjusted +$235,140 for 545 sqft more living space. Net adjustment: +$235,140.

3 bed 2 bath 2,944 sqft Built 2007
Raw Value $739,802
Adjusted Value $639,274

Adjusted -$100,528 for 233 sqft less living space. Net adjustment: -$100,528.

3 bed 2 bath 2,110 sqft Built 2013
Raw Value $682,750
Adjusted Value $942,051

Adjusted +$259,301 for 601 sqft more living space. Net adjustment: +$259,301.

4 bed 2 bath 1,710 sqft Built 2006
Raw Value $569,819
Adjusted Value $1,001,700

Adjusted +$431,881 for 1,001 sqft more living space. Net adjustment: +$431,881.

The Neighborhood

This home is valued 3.1% below the R304615B - HIGHLAND HORIZON PH3 median of $1,296,229. That positions it competitively for buyers comparing within the neighborhood. 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
$1,255,532
Median
$1,296,229

This home is -3.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $25,162 across all districts. With a homestead exemption claimed, that drops to $23,680 — saving $1,482 per year. That's $1,973 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%$11,213
Brushy Creek MUDMUD0.3868%$4,857
Williamson CountyCounty0.3694%$4,639
Austin Community Collegespecial0.1034%$1,298
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,256
Brushy Creek MUD Defined AreaMUD0.0900%$1,130
Williamson County FM/RdCounty0.0443%$557
Upper Brushy Creek WCIDWater0.0170%$213
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$25,162

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $996,926 would pay approximately $6,223 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