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12 VALLEY CREEK DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed2 bath1,607 sqftBuilt 1978

Property at a Glance

This home is estimated between $262,970 and $597,546, with a best estimate of $348,862. That places the property below the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399, in a neighborhood that appreciated 3.8% over the past year.

Estimated Value Range

$262,970 $597,546
Best Estimate
$348,862
WCAD Value
$486,109
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R575583D - RR Rual Sub 122 & Gattis School Rd Area. The estimated range of $262,970 and $597,546 should be treated as a rough guide.

Comparable Properties (5)

14 VALLEY CREEK DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,427 sqft Built 1984
Raw Value $539,541
Adjusted Value $597,546

Adjusted +$57,930 for 180 sqft more living space and +$75 for being newer. Net adjustment: +$58,005.

16 VALLEY CREEK DR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,610 sqft Built 1984
Raw Value $506,501
Adjusted Value $505,610

Adjusted -$966 for 3 sqft less living space and +$75 for being newer. Net adjustment: -$891.

3 bed 2 bath 1,664 sqft Built 1977
Raw Value $349,385
Adjusted Value $331,027

Adjusted -$18,345 for 57 sqft less living space and -$13 for being older. Net adjustment: -$18,358.

3 bed 2 bath 1,646 sqft Built 1975
Raw Value $361,452
Adjusted Value $348,862

Adjusted -$12,552 for 39 sqft less living space and -$38 for being older. Net adjustment: -$12,590.

3 bed 2 bath 1,653 sqft Built 1975
Raw Value $277,812
Adjusted Value $262,970

Adjusted -$14,804 for 46 sqft less living space and -$38 for being older. Net adjustment: -$14,842.

The Neighborhood

This home is valued 33.8% below the R575583D - RR Rual Sub 122 & Gattis School Rd Area median of $734,399. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 3.8% over the past year.

R575583D - RR Rual Sub 122 & Gattis School Rd Area

below average
213 Properties
$734,399 Median Value
+3.8% YoY Change
4% Have Pool
68% Have Garage
This Home
$486,109
Median
$734,399

This home is -33.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,424 across all districts. With a homestead exemption claimed, that drops to $6,084 — saving $1,340 per year. That's $507 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%$4,341
Williamson CountyCounty0.3694%$1,796
Austin Community Collegespecial0.1034%$503
Williamson County ESD #9 - Round RockESD0.0999%$486
Williamson County FM/RdCounty0.0443%$215
Upper Brushy Creek WCIDWater0.0170%$83
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$7,424

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $348,862 would pay approximately $2,178 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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