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3112 CARNOUSTY ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed4 bath3,463 sqftBuilt 2007

Property at a Glance

This home is estimated between $961,124 and $1,224,935, with a best estimate of $1,164,221. That places the property above 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

$961,124 $1,224,935
Best Estimate
$1,164,221
WCAD Value
$885,309
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 $961,124 and $1,224,935. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3605 CARNOUSTY CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,526 sqft Built 2001
Raw Value $905,900
Adjusted Value $1,224,935

Adjusted +$327,809 for 937 sqft more living space and -$8,774 for being older. Net adjustment: +$319,035.

3115 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 5 bath 3,145 sqft Built 2004
Raw Value $1,099,173
Adjusted Value $1,206,038

Adjusted +$111,252 for 318 sqft more living space and -$4,387 for being older. Net adjustment: +$106,865.

3116 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 3,350 sqft Built 2005
Raw Value $924,516
Adjusted Value $961,124

Adjusted +$39,533 for 113 sqft more living space and -$2,925 for being older. Net adjustment: +$36,608.

3104 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,515 sqft Built 2001
Raw Value $841,337
Adjusted Value $1,164,221

Adjusted +$331,658 for 948 sqft more living space and -$8,774 for being older. Net adjustment: +$322,884.

3114 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,899 sqft Built 2005
Raw Value $874,085
Adjusted Value $1,068,475

Adjusted +$197,315 for 564 sqft more living space and -$2,925 for being older. Net adjustment: +$194,390.

The Neighborhood

This home is valued 2.8% below the R549699C - Forest Creek Sec 14,20,21,26-30,33,34 median of $910,927. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 3.1% over the past year.

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

typical
271 Properties
$910,927 Median Value
-3.1% YoY Change
1% Have Pool
99% Have Garage
This Home
$885,309
Median
$910,927

This home is -2.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $15,929 across all districts. With a homestead exemption claimed, that drops to $14,515 — saving $1,414 per year. That's $1,210 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%$7,907
Round RockCity0.3720%$3,293
Williamson CountyCounty0.3694%$3,271
Austin Community Collegespecial0.1034%$915
Williamson County FM/RdCounty0.0443%$392
Upper Brushy Creek WCIDWater0.0170%$151
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$15,929

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,164,221 would pay approximately $7,267 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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