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312 SOUTHERN CARINA DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed4 bath3,529 sqftBuilt 2016

Property at a Glance

This home is estimated between $785,358 and $1,608,458, with a best estimate of $1,294,977. 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

$785,358 $1,608,458
Best Estimate
$1,294,977
WCAD Value
$1,349,852
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 $785,358 and $1,608,458 should be treated as a rough guide.

Comparable Properties (5)

316 SOUTHERN CARINA DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,255,532
Adjusted Value $1,608,458

Adjusted +$352,926 for 818 sqft more living space. Net adjustment: +$352,926.

4 bed 3 bath 2,166 sqft Built 2013
Raw Value $795,265
Adjusted Value $1,383,331

Adjusted +$588,066 for 1,363 sqft more living space. Net adjustment: +$588,066.

3 bed 2 bath 2,944 sqft Built 2007
Raw Value $739,802
Adjusted Value $992,200

Adjusted +$252,398 for 585 sqft more living space. Net adjustment: +$252,398.

3 bed 2 bath 2,110 sqft Built 2013
Raw Value $682,750
Adjusted Value $1,294,977

Adjusted +$612,227 for 1,419 sqft more living space. Net adjustment: +$612,227.

4 bed 2 bath 3,010 sqft Built 1976
Raw Value $561,435
Adjusted Value $785,358

Adjusted +$223,923 for 519 sqft more living space. Net adjustment: +$223,923.

The Neighborhood

This home is valued 4.1% 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
$1,349,852
Median
$1,296,229

This home is +4.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $27,053 across all districts. With a homestead exemption claimed, that drops to $25,553 — saving $1,500 per year. That's $2,129 per month a buyer should budget. The assessed value increased +5.0% vs the subdivision average of -3.4%. This above-average increase gives a protest opportunity score of 57 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$12,056
Brushy Creek MUDMUD0.3868%$5,222
Williamson CountyCounty0.3694%$4,987
Austin Community Collegespecial0.1034%$1,396
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,350
Brushy Creek MUD Defined AreaMUD0.0900%$1,215
Williamson County FM/RdCounty0.0443%$598
Upper Brushy Creek WCIDWater0.0170%$229
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$27,053
57 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,294,977 would pay approximately $8,083 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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