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603 WINNSBORO CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,653 sqftBuilt 2016

Property at a Glance

This home is estimated between $510,642 and $740,703, with a best estimate of $527,938. That places the property above the R631414D - WARNER RANCH median of $436,007, in a neighborhood that declined 3.2% over the past year.

Estimated Value Range

$510,642 $740,703
Best Estimate
$527,938
WCAD Value
$499,740
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R631414D - WARNER RANCH, this home's estimated market value is between $510,642 and $740,703. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

607 WINNSBORO CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,887 sqft Built 2016
Raw Value $556,606
Adjusted Value $740,703

Adjusted +$184,097 for 766 sqft more living space. Net adjustment: +$184,097.

828 WINNSBORO DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,309 sqft Built 2017
Raw Value $435,151
Adjusted Value $527,938

Adjusted +$82,675 for 344 sqft more living space and +$10,112 for being newer. Net adjustment: +$92,787.

616 WINNSBORO CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,340 sqft Built 2016
Raw Value $436,084
Adjusted Value $511,309

Adjusted +$75,225 for 313 sqft more living space. Net adjustment: +$75,225.

608 WINNSBORO CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,678 sqft Built 2018
Raw Value $496,425
Adjusted Value $510,642

Adjusted -$6,008 for 25 sqft less living space and +$20,225 for being newer. Net adjustment: +$14,217.

848 WINNSBORO DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,950 sqft Built 2017
Raw Value $556,328
Adjusted Value $735,396

Adjusted +$168,956 for 703 sqft more living space and +$10,112 for being newer. Net adjustment: +$179,068.

The Neighborhood

This home is valued 14.6% above the R631414D - WARNER RANCH median of $436,007. With 275 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 3.2% over the past year.

R631414D - WARNER RANCH

typical
275 Properties
$436,007 Median Value
-3.2% YoY Change
0% Have Pool
97% Have Garage
This Home
$499,740
Median
$436,007

This home is +14.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,992 across all districts. With a homestead exemption claimed, that drops to $7,649 — saving $1,343 per year. That's $637 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%$4,463
Round RockCity0.3720%$1,859
Williamson CountyCounty0.3694%$1,846
Austin Community Collegespecial0.1034%$517
Williamson County FM/RdCounty0.0443%$222
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,992

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $527,938 would pay approximately $3,295 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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