Beta Williamson County, TX only — data and coverage are limited during early access.

11 HIDDEN ACRES DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,477 sqftBuilt 1977

Property at a Glance

This home is estimated between $307,053 and $428,845, with a best estimate of $352,238. That places the property below the R427578G - Hidden Acres & Sec 2 median of $412,870, in a neighborhood that declined 4.2% over the past year.

Estimated Value Range

$307,053 $428,845
Best Estimate
$352,238
WCAD Value
$299,303
High Confidence

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

Based on 5 comparable properties in R427578G - Hidden Acres & Sec 2, this home's estimated market value is between $307,053 and $428,845. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

13 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
2 bed 1 bath 1,540 sqft Built 1977
Raw Value $358,239
Adjusted Value $344,841

Adjusted -$13,398 for 63 sqft less living space. Net adjustment: -$13,398.

18 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,828 sqft Built 1977
Raw Value $426,884
Adjusted Value $352,238

Adjusted -$74,646 for 351 sqft less living space. Net adjustment: -$74,646.

12 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,411 sqft Built 1981
Raw Value $412,870
Adjusted Value $378,627

Adjusted +$14,036 for 66 sqft more living space and -$48,279 for being older. Net adjustment: -$34,243.

16 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,485 sqft Built 1977
Raw Value $308,754
Adjusted Value $307,053

Adjusted -$1,701 for 8 sqft less living space. Net adjustment: -$1,701.

21 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,017 sqft Built 1979
Raw Value $355,158
Adjusted Value $428,845

Adjusted +$97,827 for 460 sqft more living space and -$24,140 for being older. Net adjustment: +$73,687.

The Neighborhood

This home is valued 27.5% below the R427578G - Hidden Acres & Sec 2 median of $412,870. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.2% over the past year.

R427578G - Hidden Acres & Sec 2

below average
19 Properties
$412,870 Median Value
-4.2% YoY Change
26% Have Pool
84% Have Garage
This Home
$299,303
Median
$412,870

This home is -27.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $4,571 across all districts. With a homestead exemption claimed, that drops to $3,265 — saving $1,306 per year. That's $272 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%$2,673
Williamson CountyCounty0.3694%$1,106
Austin Community Collegespecial0.1034%$309
Williamson County ESD #9 - Round RockESD0.0999%$299
Williamson County FM/RdCounty0.0443%$133
Upper Brushy Creek WCIDWater0.0170%$51
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$4,571

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $352,238 would pay approximately $2,199 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.

View full property details