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3501 AQUAMARINE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

5 bed5 bath2,664 sqftBuilt 2008

Property at a Glance

This home is estimated between $279,738 and $1,309,541, with a best estimate of $970,835. That places the property above the R147606C - WALSH RANCH median of $933,667, in a neighborhood that declined 4.6% over the past year.

Estimated Value Range

$279,738 $1,309,541
Best Estimate
$970,835
WCAD Value
$1,007,823
Low Confidence

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

There are 5 comparable properties within range, but few are in R147606C - WALSH RANCH. The estimated range of $279,738 and $1,309,541 should be treated as a rough guide.

Comparable Properties (5)

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,309,541

Adjusted -$19,111 for 47 sqft less living space and +$111,161 for being newer. Net adjustment: +$92,050.

3323 MARCASITE DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $1,071,702

Adjusted +$180,948 for 445 sqft more living space and -$13,895 for being older. Net adjustment: +$167,053.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $970,835

Adjusted +$207,379 for 510 sqft more living space and -$97,266 for being older. Net adjustment: +$110,113.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $279,738

Adjusted -$181,355 for 446 sqft less living space and -$111,161 for being older. Net adjustment: -$292,516.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $949,538

Adjusted +$304,156 for 748 sqft more living space and +$83,371 for being newer. Net adjustment: +$387,527.

The Neighborhood

This home is valued 7.9% above the R147606C - WALSH RANCH median of $933,667. With 239 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.6% over the past year.

R147606C - WALSH RANCH

typical
239 Properties
$933,667 Median Value
-4.6% YoY Change
0% Have Pool
100% Have Garage
This Home
$1,007,823
Median
$933,667

This home is +7.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $17,976 across all districts. With a homestead exemption claimed, that drops to $16,548 — saving $1,428 per year. That's $1,379 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%$8,572
Williamson CountyCounty0.3694%$3,546
Walsh Ranch MUDMUD0.3455%$3,316
Austin Community Collegespecial0.1034%$992
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$960
Williamson County FM/RdCounty0.0443%$425
Upper Brushy Creek WCIDWater0.0170%$163
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$17,976

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $970,835 would pay approximately $6,060 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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