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105 NAUTICAL CIR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed4 bath3,370 sqftBuilt 2015

Property at a Glance

This home is estimated between $661,305 and $1,384,382, with a best estimate of $1,199,379. 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

$661,305 $1,384,382
Best Estimate
$1,199,379
WCAD Value
$1,369,448
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R304615B - HIGHLAND HORIZON PH3. The estimated range of $661,305 and $1,384,382 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,833 sqft Built 2015
Raw Value $721,243
Adjusted Value $1,384,382

Adjusted +$663,139 for 1,537 sqft more living space. Net adjustment: +$663,139.

4 bed 3 bath 1,833 sqft Built 2015
Raw Value $706,626
Adjusted Value $1,369,765

Adjusted +$663,139 for 1,537 sqft more living space. Net adjustment: +$663,139.

4 bed 3 bath 2,173 sqft Built 2025
Raw Value $682,933
Adjusted Value $1,199,379

Adjusted +$516,446 for 1,197 sqft more living space. Net adjustment: +$516,446.

3 bed 2 bath 3,052 sqft Built 1999
Raw Value $524,104
Adjusted Value $661,305

Adjusted +$137,201 for 318 sqft more living space. Net adjustment: +$137,201.

4 bed 2 bath 2,381 sqft Built 1997
Raw Value $435,931
Adjusted Value $862,635

Adjusted +$426,704 for 989 sqft more living space. Net adjustment: +$426,704.

The Neighborhood

This home is valued 5.6% 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
$1,369,448
Median
$1,296,229

This home is +5.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $27,445 across all districts. With a homestead exemption claimed, that drops to $25,942 — saving $1,503 per year. That's $2,162 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%$12,231
Brushy Creek MUDMUD0.3868%$5,298
Williamson CountyCounty0.3694%$5,059
Austin Community Collegespecial0.1034%$1,416
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,369
Brushy Creek MUD Defined AreaMUD0.0900%$1,233
Williamson County FM/RdCounty0.0443%$607
Upper Brushy Creek WCIDWater0.0170%$233
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$27,445

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,199,379 would pay approximately $7,486 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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