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15 HIDDEN ACRES DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath3,302 sqftBuilt 2020

Property at a Glance

This home is estimated between $774,301 and $2,026,661, with a best estimate of $834,382. That places the property above the R427578G - Hidden Acres & Sec 2 median of $412,870, in a neighborhood that declined 4.2% over the past year.

Estimated Value Range

$774,301 $2,026,661
Best Estimate
$834,382
WCAD Value
$783,225
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R427578G - Hidden Acres & Sec 2. The estimated range of $774,301 and $2,026,661 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,572 sqft Built 2004
Raw Value $425,936
Adjusted Value $774,301

Adjusted +$155,247 for 730 sqft more living space and +$193,118 for being newer. Net adjustment: +$348,365.

14 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 91% similar Same subdivision
4 bed 2 bath 2,990 sqft Built 1977
Raw Value $465,918
Adjusted Value $1,051,273

Adjusted +$66,352 for 312 sqft more living space and +$519,003 for being newer. Net adjustment: +$585,355.

3 bed 3,226 sqft Built 1986
Raw Value $1,600,123
Adjusted Value $2,026,661

Adjusted +$16,163 for 76 sqft more living space and +$410,375 for being newer. Net adjustment: +$426,538.

3 bed 2 bath 2,254 sqft Built 2004
Raw Value $395,001
Adjusted Value $810,994

Adjusted +$222,875 for 1,048 sqft more living space and +$193,118 for being newer. Net adjustment: +$415,993.

3 bed 2 bath 2,136 sqft Built 2004
Raw Value $393,294
Adjusted Value $834,382

Adjusted +$247,970 for 1,166 sqft more living space and +$193,118 for being newer. Net adjustment: +$441,088.

The Neighborhood

This home is valued 89.7% above the R427578G - Hidden Acres & Sec 2 median of $412,870. With 19 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.2% over the past year.

R427578G - Hidden Acres & Sec 2

outlier high
19 Properties
$412,870 Median Value
-4.2% YoY Change
26% Have Pool
84% Have Garage
This Home
$783,225
Median
$412,870

This home is +89.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,961 across all districts. With a homestead exemption claimed, that drops to $10,566 — saving $1,395 per year. That's $881 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%$6,995
Williamson CountyCounty0.3694%$2,894
Austin Community Collegespecial0.1034%$810
Williamson County ESD #9 - Round RockESD0.0999%$783
Williamson County FM/RdCounty0.0443%$347
Upper Brushy Creek WCIDWater0.0170%$133
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$11,961

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $834,382 would pay approximately $5,208 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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