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3426 AQUAMARINE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,918 sqftBuilt 2009

Property at a Glance

This home is estimated between $369,126 and $1,398,929, with a best estimate of $1,060,223. 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

$369,126 $1,398,929
Best Estimate
$1,060,223
WCAD Value
$885,018
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 $369,126 and $1,398,929 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 $1,161,090

Adjusted +$284,231 for 699 sqft more living space and -$27,790 for being older. Net adjustment: +$256,441.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $369,126

Adjusted -$78,072 for 192 sqft less living space and -$125,056 for being older. Net adjustment: -$203,128.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $1,060,223

Adjusted +$310,662 for 764 sqft more living space and -$111,161 for being older. Net adjustment: +$199,501.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $1,038,926

Adjusted +$407,439 for 1,002 sqft more living space and +$69,476 for being newer. Net adjustment: +$476,915.

5 bed 5 bath 2,711 sqft Built 2016
Raw Value $1,217,491
Adjusted Value $1,398,929

Adjusted +$84,172 for 207 sqft more living space and +$97,266 for being newer. Net adjustment: +$181,438.

The Neighborhood

This home is valued 5.2% below the R147606C - WALSH RANCH median of $933,667. That positions it competitively for buyers comparing within the neighborhood. 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
$885,018
Median
$933,667

This home is -5.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $16,574 across all districts. With a homestead exemption claimed, that drops to $15,161 — saving $1,413 per year. That's $1,263 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%$7,904
Williamson CountyCounty0.3694%$3,270
Walsh Ranch MUDMUD0.3455%$3,058
Austin Community Collegespecial0.1034%$915
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$885
Williamson County FM/RdCounty0.0443%$392
Upper Brushy Creek WCIDWater0.0170%$150
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$16,574

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,060,223 would pay approximately $6,618 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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