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3612 AQUAMARINE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath3,471 sqftBuilt 2008

Property at a Glance

This home is estimated between $597,342 and $1,399,849, with a best estimate of $1,277,685. 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

$597,342 $1,399,849
Best Estimate
$1,277,685
WCAD Value
$904,721
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 $597,342 and $1,399,849 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 $1,399,849

Adjusted +$509,095 for 1,252 sqft more living space and -$13,895 for being older. Net adjustment: +$495,200.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $607,885

Adjusted +$146,792 for 361 sqft more living space and -$111,161 for being older. Net adjustment: +$35,631.

3 bed 2 bath 3,097 sqft Built 2000
Raw Value $556,425
Adjusted Value $597,342

Adjusted +$152,078 for 374 sqft more living space and -$111,161 for being older. Net adjustment: +$40,917.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $1,298,982

Adjusted +$535,526 for 1,317 sqft more living space and -$97,266 for being older. Net adjustment: +$438,260.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $1,277,685

Adjusted +$632,303 for 1,555 sqft more living space and +$83,371 for being newer. Net adjustment: +$715,674.

The Neighborhood

This home is valued 3.1% 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
$904,721
Median
$933,667

This home is -3.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $16,943 across all districts. With a homestead exemption claimed, that drops to $15,526 — saving $1,417 per year. That's $1,294 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%$8,080
Williamson CountyCounty0.3694%$3,342
Walsh Ranch MUDMUD0.3455%$3,126
Austin Community Collegespecial0.1034%$935
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$905
Williamson County FM/RdCounty0.0443%$401
Upper Brushy Creek WCIDWater0.0170%$154
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$16,943

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,277,685 would pay approximately $7,975 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 4/19/2026.

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