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3609 CARNOUSTY CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath1,972 sqftBuilt 2001

Property at a Glance

This home is estimated between $651,369 and $912,914, with a best estimate of $712,083. 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

$651,369 $912,914
Best Estimate
$712,083
WCAD Value
$968,184
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 $651,369 and $912,914. 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 $663,232

Adjusted -$66,471 for 190 sqft less living space and +$2,925 for being newer. Net adjustment: -$63,546.

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 $712,083

Adjusted -$193,817 for 554 sqft less living space. Net adjustment: -$193,817.

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 $651,369

Adjusted -$189,968 for 543 sqft less living space. Net adjustment: -$189,968.

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 $773,085

Adjusted -$163,030 for 466 sqft less living space and +$19,011 for being newer. Net adjustment: -$144,019.

3107 CARNOUSTY ST, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 1,879 sqft Built 2001
Raw Value $880,378
Adjusted Value $912,914

Adjusted +$32,536 for 93 sqft more living space. Net adjustment: +$32,536.

The Neighborhood

This home is valued 6.3% 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

typical
271 Properties
$910,927 Median Value
-3.1% YoY Change
1% Have Pool
99% Have Garage
This Home
$968,184
Median
$910,927

This home is +6.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $17,322 across all districts. With a homestead exemption claimed, that drops to $15,894 — saving $1,428 per year. That's $1,325 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%$8,598
Round RockCity0.3720%$3,581
Williamson CountyCounty0.3694%$3,557
Austin Community Collegespecial0.1034%$995
Williamson County FM/RdCounty0.0443%$427
Upper Brushy Creek WCIDWater0.0170%$164
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$17,322

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $712,083 would pay approximately $4,445 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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