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4018 CASTLE CREEK CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,356 sqftBuilt 1995

Property at a Glance

This home is estimated between $322,472 and $795,761, with a best estimate of $683,323. That places the property above the L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C median of $449,628, in a neighborhood that declined 2.9% over the past year.

Estimated Value Range

$322,472 $795,761
Best Estimate
$683,323
WCAD Value
$672,988
High Confidence

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

Based on 5 comparable properties in L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C, this home's estimated market value is between $322,472 and $795,761. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4020 CASTLE CREEK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,284 sqft Built 1996
Raw Value $666,603
Adjusted Value $683,323

Adjusted +$20,272 for 72 sqft more living space and -$3,552 for being older. Net adjustment: +$16,720.

4016 CASTLE CREEK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,654 sqft Built 1995
Raw Value $457,906
Adjusted Value $374,003

Adjusted -$83,903 for 298 sqft less living space. Net adjustment: -$83,903.

4022 CASTLE CREEK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,955 sqft Built 1996
Raw Value $686,409
Adjusted Value $795,761

Adjusted +$112,904 for 401 sqft more living space and -$3,552 for being older. Net adjustment: +$109,352.

4012 CASTLE CREEK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,859 sqft Built 1999
Raw Value $627,622
Adjusted Value $753,345

Adjusted +$139,933 for 497 sqft more living space and -$14,210 for being older. Net adjustment: +$125,723.

4014 CASTLE CREEK CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 3,024 sqft Built 1995
Raw Value $510,551
Adjusted Value $322,472

Adjusted -$188,079 for 668 sqft less living space. Net adjustment: -$188,079.

The Neighborhood

This home is valued 49.7% above the L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C median of $449,628. With 904 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.9% over the past year.

L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C

above average
904 Properties
$449,628 Median Value
-2.9% YoY Change
1% Have Pool
99% Have Garage
This Home
$672,988
Median
$449,628

This home is +49.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,016 across all districts. With a homestead exemption claimed, that drops to $11,370 — saving $1,646 per year. That's $948 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
Leander ISDSchool1.0869%$7,315
Williamson CountyCounty0.3694%$2,486
Vista Oaks MUDMUD0.2131%$1,434
Austin Community Collegespecial0.1034%$696
Williamson County ESD #9 - Round RockESD0.0999%$672
Williamson County FM/RdCounty0.0443%$298
Upper Brushy Creek WCIDWater0.0170%$114
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9341%$13,016

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $683,323 would pay approximately $4,265 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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