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3106 CARNOUSTY ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath2,612 sqftBuilt 2001

Property at a Glance

This home is estimated between $779,528 and $996,989, with a best estimate of $917,090. 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

$779,528 $996,989
Best Estimate
$917,090
WCAD Value
$893,609
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 $779,528 and $996,989. 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 $935,987

Adjusted +$30,087 for 86 sqft more living space. Net adjustment: +$30,087.

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 $917,090

Adjusted -$186,470 for 533 sqft less living space and +$4,387 for being newer. Net adjustment: -$182,083.

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 $875,272

Adjusted +$33,935 for 97 sqft more living space. Net adjustment: +$33,935.

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 $779,528

Adjusted -$100,407 for 287 sqft less living space and +$5,850 for being newer. Net adjustment: -$94,557.

3118 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,438 sqft Built 2014
Raw Value $917,104
Adjusted Value $996,989

Adjusted +$60,874 for 174 sqft more living space and +$19,011 for being newer. Net adjustment: +$79,885.

The Neighborhood

This home is valued 1.9% 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
$893,609
Median
$910,927

This home is -1.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $16,078 across all districts. With a homestead exemption claimed, that drops to $14,663 — saving $1,415 per year. That's $1,222 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%$7,981
Round RockCity0.3720%$3,324
Williamson CountyCounty0.3694%$3,301
Austin Community Collegespecial0.1034%$924
Williamson County FM/RdCounty0.0443%$396
Upper Brushy Creek WCIDWater0.0170%$152
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$16,078

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $917,090 would pay approximately $5,724 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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