Beta Williamson County, TX only — data and coverage are limited during early access.

3614 CARNOUSTY CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed4 bath3,452 sqftBuilt 2014

Property at a Glance

This home is estimated between $818,134 and $1,271,852, with a best estimate of $1,054,391. 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

$818,134 $1,271,852
Best Estimate
$1,054,391
WCAD Value
$1,114,872
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 $818,134 and $1,271,852. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $1,191,953

Adjusted +$107,404 for 307 sqft more living space and -$14,624 for being older. Net adjustment: +$92,780.

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 $947,040

Adjusted +$35,685 for 102 sqft more living space and -$13,161 for being older. Net adjustment: +$22,524.

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 $1,054,391

Adjusted +$193,467 for 553 sqft more living space and -$13,161 for being older. Net adjustment: +$180,306.

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 $1,271,852

Adjusted +$354,748 for 1,014 sqft more living space. Net adjustment: +$354,748.

3103 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,282 sqft Built 2013
Raw Value $760,122
Adjusted Value $818,134

Adjusted +$59,474 for 170 sqft more living space and -$1,462 for being older. Net adjustment: +$58,012.

The Neighborhood

This home is valued 22.4% 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
$1,114,872
Median
$910,927

This home is +22.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $20,060 across all districts. With a homestead exemption claimed, that drops to $18,603 — saving $1,457 per year. That's $1,550 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%$9,957
Round RockCity0.3720%$4,147
Williamson CountyCounty0.3694%$4,119
Austin Community Collegespecial0.1034%$1,153
Williamson County FM/RdCounty0.0443%$494
Upper Brushy Creek WCIDWater0.0170%$190
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$20,060

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,054,391 would pay approximately $6,581 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.

View full property details