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3429 AQUAMARINE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,681 sqftBuilt 2008

Property at a Glance

This home is estimated between $286,651 and $1,316,453, with a best estimate of $977,748. 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

$286,651 $1,316,453
Best Estimate
$977,748
WCAD Value
$1,053,171
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 $286,651 and $1,316,453 should be treated as a rough guide.

Comparable Properties (5)

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 $1,078,615

Adjusted +$187,861 for 462 sqft more living space and -$13,895 for being older. Net adjustment: +$173,966.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $977,748

Adjusted +$214,292 for 527 sqft more living space and -$97,266 for being older. Net adjustment: +$117,026.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $956,451

Adjusted +$311,069 for 765 sqft more living space and +$83,371 for being newer. Net adjustment: +$394,440.

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,316,453

Adjusted -$12,199 for 30 sqft less living space and +$111,161 for being newer. Net adjustment: +$98,962.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $286,651

Adjusted -$174,442 for 429 sqft less living space and -$111,161 for being older. Net adjustment: -$285,603.

The Neighborhood

This home is valued 12.8% 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
$1,053,171
Median
$933,667

This home is +12.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $19,384 across all districts. With a homestead exemption claimed, that drops to $17,942 — saving $1,442 per year. That's $1,495 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%$9,244
Williamson CountyCounty0.3694%$3,824
Walsh Ranch MUDMUD0.3455%$3,576
Austin Community Collegespecial0.1034%$1,070
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,035
Williamson County FM/RdCounty0.0443%$459
Upper Brushy Creek WCIDWater0.0170%$176
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$19,384

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $977,748 would pay approximately $6,103 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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