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3615 CARNOUSTY CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath3,459 sqftBuilt 2011

Property at a Glance

This home is estimated between $812,244 and $1,198,789, with a best estimate of $878,060. That places the property below the R549699C - Forest Creek Sec 14,20,21,26-30,33,34 median of $910,927, in a neighborhood that declined 3.1% over the past year.

Estimated Value Range

$812,244 $1,198,789
Best Estimate
$878,060
WCAD Value
$1,245,989
High Confidence

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

Based on 5 comparable properties in R549699C - Forest Creek Sec 14,20,21,26-30,33,34, this home's estimated market value is between $812,244 and $1,198,789. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3110 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 96% similar Same subdivision
4 bed 4 bath 3,577 sqft Built 2011
Raw Value $856,084
Adjusted Value $814,802

Adjusted -$41,282 for 118 sqft less living space. Net adjustment: -$41,282.

3614 CARNOUSTY CV, ROUND ROCK, TX 78664
0.00 mi 96% similar Same subdivision
4 bed 4 bath 3,452 sqft Built 2014
Raw Value $1,114,872
Adjusted Value $1,121,708

Adjusted +$2,449 for 7 sqft more living space and +$4,387 for being newer. Net adjustment: +$6,836.

3112 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
4 bed 4 bath 3,463 sqft Built 2007
Raw Value $885,309
Adjusted Value $878,060

Adjusted -$1,399 for 4 sqft less living space and -$5,850 for being older. Net adjustment: -$7,249.

3616 CARNOUSTY CV, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
4 bed 3 bath 3,392 sqft Built 2014
Raw Value $784,417
Adjusted Value $812,244

Adjusted +$23,440 for 67 sqft more living space and +$4,387 for being newer. Net adjustment: +$27,827.

3115 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
5 bed 5 bath 3,145 sqft Built 2004
Raw Value $1,099,173
Adjusted Value $1,198,789

Adjusted +$109,853 for 314 sqft more living space and -$10,237 for being older. Net adjustment: +$99,616.

The Neighborhood

This home is valued 36.8% above the R549699C - Forest Creek Sec 14,20,21,26-30,33,34 median of $910,927. With 271 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 3.1% over the past year.

R549699C - Forest Creek Sec 14,20,21,26-30,33,34

above average
271 Properties
$910,927 Median Value
-3.1% YoY Change
1% Have Pool
99% Have Garage
This Home
$1,245,989
Median
$910,927

This home is +36.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $22,419 across all districts. With a homestead exemption claimed, that drops to $20,938 — saving $1,481 per year. That's $1,745 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%$11,128
Round RockCity0.3720%$4,635
Williamson CountyCounty0.3694%$4,603
Austin Community Collegespecial0.1034%$1,288
Williamson County FM/RdCounty0.0443%$552
Upper Brushy Creek WCIDWater0.0170%$212
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$22,419

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $878,060 would pay approximately $5,481 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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