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3632 AQUAMARINE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,546 sqftBuilt 2009

Property at a Glance

This home is estimated between $887,661 and $1,070,361, with a best estimate of $932,226. That places the property below the R147606C - WALSH RANCH median of $933,667, in a neighborhood that declined 4.6% over the past year.

Estimated Value Range

$887,661 $1,070,361
Best Estimate
$932,226
WCAD Value
$1,061,110
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 $887,661 and $1,070,361 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 $1,009,826

Adjusted +$132,967 for 327 sqft more living space and -$27,790 for being older. Net adjustment: +$105,177.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $908,958

Adjusted +$159,397 for 392 sqft more living space and -$111,161 for being older. Net adjustment: +$48,236.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $887,661

Adjusted +$256,174 for 630 sqft more living space and +$69,476 for being newer. Net adjustment: +$325,650.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $932,226

Adjusted +$256,174 for 630 sqft more living space and +$97,266 for being newer. Net adjustment: +$353,440.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $1,070,361

Adjusted +$298,870 for 735 sqft more living space and +$69,476 for being newer. Net adjustment: +$368,346.

The Neighborhood

This home is valued 13.6% 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
$1,061,110
Median
$933,667

This home is +13.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $19,872 across all districts. With a homestead exemption claimed, that drops to $18,426 — saving $1,446 per year. That's $1,536 per month a buyer should budget. The assessed value increased +7.1% vs the subdivision average of -4.6%. This above-average increase gives a protest opportunity score of 70 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$9,477
Williamson CountyCounty0.3694%$3,920
Walsh Ranch MUDMUD0.3455%$3,666
Austin Community Collegespecial0.1034%$1,097
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,061
Williamson County FM/RdCounty0.0443%$470
Upper Brushy Creek WCIDWater0.0170%$180
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$19,872
70 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $932,226 would pay approximately $5,819 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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