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12 HILLWAY DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,989 sqftBuilt 1986

Property at a Glance

This home is estimated between $358,171 and $627,325, with a best estimate of $394,748. That places the property below the R563694C - Oak Bluff Estates Ph 2 median of $741,250, in a neighborhood that appreciated 3.7% over the past year.

Estimated Value Range

$358,171 $627,325
Best Estimate
$394,748
WCAD Value
$787,974
Low Confidence

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

There are 5 comparable properties within range, but none are in R563694C - Oak Bluff Estates Ph 2. The estimated range of $358,171 and $627,325 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,892 sqft Built 1995
Raw Value $607,430
Adjusted Value $627,325

Adjusted +$31,679 for 97 sqft more living space and -$11,784 for being older. Net adjustment: +$19,895.

4 bed 2 bath 1,855 sqft Built 1995
Raw Value $326,192
Adjusted Value $358,171

Adjusted +$43,763 for 134 sqft more living space and -$11,784 for being older. Net adjustment: +$31,979.

3 bed 4 bath 1,963 sqft Built 1978
Raw Value $315,589
Adjusted Value $394,748

Adjusted +$8,491 for 26 sqft more living space and +$10,475 for being newer and +$60,193 for having a garage. Net adjustment: +$79,159.

3 bed 2 bath 1,830 sqft Built 1983
Raw Value $373,783
Adjusted Value $489,831

Adjusted +$51,927 for 159 sqft more living space and +$3,928 for being newer and +$60,193 for having a garage. Net adjustment: +$116,048.

3 bed 2 bath 2,006 sqft Built 1975
Raw Value $379,361
Adjusted Value $388,212

Adjusted -$5,552 for 17 sqft less living space and +$14,403 for being newer. Net adjustment: +$8,851.

The Neighborhood

This home is valued 6.3% above the R563694C - Oak Bluff Estates Ph 2 median of $741,250. With 341 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 3.7% over the past year.

R563694C - Oak Bluff Estates Ph 2

typical
341 Properties
$741,250 Median Value
+3.7% YoY Change
1% Have Pool
99% Have Garage
This Home
$787,974
Median
$741,250

This home is +6.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,178 across all districts. With a homestead exemption claimed, that drops to $12,782 — saving $1,396 per year. That's $1,065 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%$7,037
Round RockCity0.3720%$2,931
Williamson CountyCounty0.3694%$2,911
Austin Community Collegespecial0.1034%$815
Williamson County FM/RdCounty0.0443%$349
Upper Brushy Creek WCIDWater0.0170%$134
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$14,178

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $394,748 would pay approximately $2,464 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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