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3440 TOURMALINE TRL, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,586 sqftBuilt 2008

Property at a Glance

This home is estimated between $386,129 and $1,183,531, with a best estimate of $1,040,193. 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

$386,129 $1,183,531
Best Estimate
$1,040,193
WCAD Value
$1,109,475
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $386,129 and $1,183,531. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4 bed 3 bath 2,789 sqft Built 2003
Raw Value $538,150
Adjusted Value $386,129

Adjusted -$82,545 for 203 sqft less living space and -$69,476 for being older. Net adjustment: -$152,021.

3409 TOURMALINE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,684 sqft Built 2008
Raw Value $1,080,042
Adjusted Value $1,040,193

Adjusted -$39,849 for 98 sqft less living space. Net adjustment: -$39,849.

3423 TOURMALINE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,404 sqft Built 2009
Raw Value $914,440
Adjusted Value $1,002,341

Adjusted +$74,006 for 182 sqft more living space and +$13,895 for being newer. Net adjustment: +$87,901.

3428 TOURMALINE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,023 sqft Built 2009
Raw Value $940,706
Adjusted Value $1,183,531

Adjusted +$228,930 for 563 sqft more living space and +$13,895 for being newer. Net adjustment: +$242,825.

3448 TOURMALINE TRL, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,408 sqft Built 2008
Raw Value $1,045,926
Adjusted Value $1,118,305

Adjusted +$72,379 for 178 sqft more living space. Net adjustment: +$72,379.

The Neighborhood

This home is valued 18.8% 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

above average
239 Properties
$933,667 Median Value
-4.6% YoY Change
0% Have Pool
100% Have Garage
This Home
$1,109,475
Median
$933,667

This home is +18.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $20,778 across all districts. With a homestead exemption claimed, that drops to $19,323 — saving $1,455 per year. That's $1,610 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%$9,909
Williamson CountyCounty0.3694%$4,099
Walsh Ranch MUDMUD0.3455%$3,833
Austin Community Collegespecial0.1034%$1,147
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,109
Williamson County FM/RdCounty0.0443%$492
Upper Brushy Creek WCIDWater0.0170%$189
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$20,778

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,040,193 would pay approximately $6,493 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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