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3607 CARNOUSTY CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,243 sqftBuilt 2000

Property at a Glance

This home is estimated between $544,544 and $808,355, with a best estimate of $747,640. 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

$544,544 $808,355
Best Estimate
$747,640
WCAD Value
$968,389
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 $544,544 and $808,355. 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 $759,503

Adjusted +$28,338 for 81 sqft more living space and +$4,387 for being newer. Net adjustment: +$32,725.

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 $808,355

Adjusted -$99,007 for 283 sqft less living space and +$1,462 for being newer. Net adjustment: -$97,545.

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 $544,544

Adjusted -$387,284 for 1,107 sqft less living space and +$7,312 for being newer. Net adjustment: -$379,972.

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 $747,640

Adjusted -$95,159 for 272 sqft less living space and +$1,462 for being newer. Net adjustment: -$93,697.

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 $651,896

Adjusted -$229,501 for 656 sqft less living space and +$7,312 for being newer. Net adjustment: -$222,189.

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
$968,389
Median
$910,927

This home is +6.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $17,424 across all districts. With a homestead exemption claimed, that drops to $15,995 — saving $1,429 per year. That's $1,333 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%$8,649
Round RockCity0.3720%$3,602
Williamson CountyCounty0.3694%$3,578
Austin Community Collegespecial0.1034%$1,001
Williamson County FM/RdCounty0.0443%$429
Upper Brushy Creek WCIDWater0.0170%$165
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$17,424

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $747,640 would pay approximately $4,667 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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