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4017 CASTLE CREEK, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,598 sqftBuilt 2000

Property at a Glance

This home is estimated between $364,023 and $621,024, with a best estimate of $403,361. That places the property below 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

$364,023 $621,024
Best Estimate
$403,361
WCAD Value
$638,770
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 $364,023 and $621,024 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,585 sqft Built 1997
Raw Value $383,881
Adjusted Value $398,198

Adjusted +$3,660 for 13 sqft more living space and +$10,657 for being newer. Net adjustment: +$14,317.

3 bed 2 bath 1,584 sqft Built 1995
Raw Value $381,657
Adjusted Value $403,361

Adjusted +$3,942 for 14 sqft more living space and +$17,762 for being newer. Net adjustment: +$21,704.

3 bed 2 bath 1,675 sqft Built 1995
Raw Value $367,941
Adjusted Value $364,023

Adjusted -$21,680 for 77 sqft less living space and +$17,762 for being newer. Net adjustment: -$3,918.

4 bed 2 bath 1,657 sqft Built 1978
Raw Value $559,484
Adjusted Value $621,024

Adjusted -$16,612 for 59 sqft less living space and +$78,152 for being newer. Net adjustment: +$61,540.

3 bed 2 bath 1,550 sqft Built 1984
Raw Value $366,931
Adjusted Value $437,284

Adjusted +$13,515 for 48 sqft more living space and +$56,838 for being newer. Net adjustment: +$70,353.

The Neighborhood

This home is valued 42.1% 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
$638,770
Median
$449,628

This home is +42.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,354 across all districts. With a homestead exemption claimed, that drops to $10,715 — saving $1,639 per year. That's $893 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%$6,943
Williamson CountyCounty0.3694%$2,360
Vista Oaks MUDMUD0.2131%$1,361
Austin Community Collegespecial0.1034%$660
Williamson County ESD #9 - Round RockESD0.0999%$638
Williamson County FM/RdCounty0.0443%$283
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9341%$12,354

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $403,361 would pay approximately $2,518 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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