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4007 CASTLE CREEK, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,284 sqftBuilt 1997

Property at a Glance

This home is estimated between $329,032 and $887,426, with a best estimate of $698,943. 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

$329,032 $887,426
Best Estimate
$698,943
WCAD Value
$659,590
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in L494500D - Vista Oaks Sec 5B Ph 2 & SEC 5C. The estimated range of $329,032 and $887,426 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $883,114

Adjusted +$36,602 for 130 sqft more living space and -$14,210 for being older. Net adjustment: +$22,392.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $887,426

Adjusted +$18,301 for 65 sqft more living space and -$35,524 for being older. Net adjustment: -$17,223.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $329,032

Adjusted -$232,565 for 826 sqft less living space and -$10,657 for being older. Net adjustment: -$243,222.

3 bed 2 bath 2,221 sqft Built 2014
Raw Value $741,595
Adjusted Value $698,943

Adjusted +$17,738 for 63 sqft more living space and -$60,390 for being older. Net adjustment: -$42,652.

3 bed 2 bath 2,248 sqft Built 2018
Raw Value $479,901
Adjusted Value $415,437

Adjusted +$10,136 for 36 sqft more living space and -$74,600 for being older. Net adjustment: -$64,464.

The Neighborhood

This home is valued 46.7% 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
$659,590
Median
$449,628

This home is +46.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,757 across all districts. With a homestead exemption claimed, that drops to $11,114 — saving $1,643 per year. That's $926 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%$7,169
Williamson CountyCounty0.3694%$2,437
Vista Oaks MUDMUD0.2131%$1,406
Austin Community Collegespecial0.1034%$682
Williamson County ESD #9 - Round RockESD0.0999%$659
Williamson County FM/RdCounty0.0443%$292
Upper Brushy Creek WCIDWater0.0170%$112
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9341%$12,757

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $698,943 would pay approximately $4,363 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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