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

19 HIDDEN ACRES DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

2 bed2 bath2,067 sqftBuilt 1979

Property at a Glance

This home is estimated between $347,639 and $501,851, with a best estimate of $456,666. 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

$347,639 $501,851
Best Estimate
$456,666
WCAD Value
$475,646
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 $347,639 and $501,851. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $501,851

Adjusted +$50,827 for 239 sqft more living space and +$24,140 for being newer. Net adjustment: +$74,967.

9 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,525 sqft Built 1977
Raw Value $420,900
Adjusted Value $347,639

Adjusted -$97,401 for 458 sqft less living space and +$24,140 for being newer. Net adjustment: -$73,261.

16 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
3 bed 2 bath 1,485 sqft Built 1977
Raw Value $308,754
Adjusted Value $456,666

Adjusted +$123,772 for 582 sqft more living space and +$24,140 for being newer. Net adjustment: +$147,912.

11 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
3 bed 2 bath 1,477 sqft Built 1977
Raw Value $299,303
Adjusted Value $448,916

Adjusted +$125,473 for 590 sqft more living space and +$24,140 for being newer. Net adjustment: +$149,613.

13 HIDDEN ACRES DR, ROUND ROCK, TX 78665
0.00 mi 98% similar Same subdivision
2 bed 1 bath 1,540 sqft Built 1977
Raw Value $358,239
Adjusted Value $494,454

Adjusted +$112,075 for 527 sqft more living space and +$24,140 for being newer. Net adjustment: +$136,215.

The Neighborhood

This home is valued 15.2% 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

above average
19 Properties
$412,870 Median Value
-4.2% YoY Change
26% Have Pool
84% Have Garage
This Home
$475,646
Median
$412,870

This home is +15.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,264 across all districts. With a homestead exemption claimed, that drops to $5,926 — saving $1,338 per year. That's $494 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%$4,248
Williamson CountyCounty0.3694%$1,757
Austin Community Collegespecial0.1034%$492
Williamson County ESD #9 - Round RockESD0.0999%$475
Williamson County FM/RdCounty0.0443%$211
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$7,264

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $456,666 would pay approximately $2,850 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