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3625 AQUAMARINE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,061 sqftBuilt 2007

Property at a Glance

This home is estimated between $718,238 and $900,937, with a best estimate of $762,803. 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

$718,238 $900,937
Best Estimate
$762,803
WCAD Value
$872,753
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 $718,238 and $900,937 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 $840,402

Adjusted -$64,247 for 158 sqft less living space. Net adjustment: -$64,247.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $739,535

Adjusted -$37,816 for 93 sqft less living space and -$83,371 for being older. Net adjustment: -$121,187.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $718,238

Adjusted +$58,961 for 145 sqft more living space and +$97,266 for being newer. Net adjustment: +$156,227.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $762,803

Adjusted +$58,961 for 145 sqft more living space and +$125,056 for being newer. Net adjustment: +$184,017.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $900,937

Adjusted +$101,656 for 250 sqft more living space and +$97,266 for being newer. Net adjustment: +$198,922.

The Neighborhood

This home is valued 6.5% 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
$872,753
Median
$933,667

This home is -6.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $16,345 across all districts. With a homestead exemption claimed, that drops to $14,933 — saving $1,412 per year. That's $1,244 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%$7,795
Williamson CountyCounty0.3694%$3,224
Walsh Ranch MUDMUD0.3455%$3,015
Austin Community Collegespecial0.1034%$902
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$873
Williamson County FM/RdCounty0.0443%$387
Upper Brushy Creek WCIDWater0.0170%$148
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$16,345

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $762,803 would pay approximately $4,761 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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