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109 NAUTICAL CIR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed5 bath3,980 sqftBuilt 2015

Property at a Glance

This home is estimated between $924,490 and $1,647,566, with a best estimate of $1,462,563. That places the property above the R304615B - HIGHLAND HORIZON PH3 median of $1,296,229, in a neighborhood that declined 3.4% over the past year.

Estimated Value Range

$924,490 $1,647,566
Best Estimate
$1,462,563
WCAD Value
$1,225,392
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 $924,490 and $1,647,566 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 $1,647,566

Adjusted +$926,323 for 2,147 sqft more living space. Net adjustment: +$926,323.

4 bed 3 bath 1,833 sqft Built 2015
Raw Value $706,626
Adjusted Value $1,632,949

Adjusted +$926,323 for 2,147 sqft more living space. Net adjustment: +$926,323.

4 bed 3 bath 2,173 sqft Built 2025
Raw Value $682,933
Adjusted Value $1,462,563

Adjusted +$779,630 for 1,807 sqft more living space. Net adjustment: +$779,630.

3 bed 2 bath 3,052 sqft Built 1999
Raw Value $524,104
Adjusted Value $924,490

Adjusted +$400,386 for 928 sqft more living space. Net adjustment: +$400,386.

4 bed 2 bath 2,381 sqft Built 1997
Raw Value $435,931
Adjusted Value $1,125,819

Adjusted +$689,888 for 1,599 sqft more living space. Net adjustment: +$689,888.

The Neighborhood

This home is valued 5.5% 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
$1,225,392
Median
$1,296,229

This home is -5.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $24,558 across all districts. With a homestead exemption claimed, that drops to $23,082 — saving $1,476 per year. That's $1,924 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%$10,944
Brushy Creek MUDMUD0.3868%$4,740
Williamson CountyCounty0.3694%$4,527
Austin Community Collegespecial0.1034%$1,267
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,225
Brushy Creek MUD Defined AreaMUD0.0900%$1,103
Williamson County FM/RdCounty0.0443%$543
Upper Brushy Creek WCIDWater0.0170%$208
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$24,558

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,462,563 would pay approximately $9,129 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 4/17/2026.

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