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3114 CARNOUSTY ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,899 sqftBuilt 2005

Property at a Glance

This home is estimated between $766,734 and $1,030,544, with a best estimate of $981,692. 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

$766,734 $1,030,544
Best Estimate
$981,692
WCAD Value
$874,085
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 $766,734 and $1,030,544. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3120 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,162 sqft Built 2003
Raw Value $726,778
Adjusted Value $981,692

Adjusted +$257,839 for 737 sqft more living space and -$2,925 for being older. Net adjustment: +$254,914.

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 $1,030,544

Adjusted +$130,494 for 373 sqft more living space and -$5,850 for being older. Net adjustment: +$124,644.

3108 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,748 sqft Built 2013
Raw Value $832,689
Adjusted Value $897,215

Adjusted +$52,827 for 151 sqft more living space and +$11,699 for being newer. Net adjustment: +$64,526.

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 $1,011,648

Adjusted -$86,063 for 246 sqft less living space and -$1,462 for being older. Net adjustment: -$87,525.

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 $766,734

Adjusted -$157,782 for 451 sqft less living space. Net adjustment: -$157,782.

The Neighborhood

This home is valued 4.0% 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
$874,085
Median
$910,927

This home is -4.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $15,727 across all districts. With a homestead exemption claimed, that drops to $14,315 — saving $1,412 per year. That's $1,193 per month a buyer should budget. The assessed value increased +9.3% vs the subdivision average of -3.1%. This above-average increase gives a protest opportunity score of 70 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,806
Round RockCity0.3720%$3,252
Williamson CountyCounty0.3694%$3,229
Austin Community Collegespecial0.1034%$904
Williamson County FM/RdCounty0.0443%$387
Upper Brushy Creek WCIDWater0.0170%$149
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$15,727
70 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $981,692 would pay approximately $6,128 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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