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

16640 CORDILLERA DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

3 bed2 bath1,576 sqftBuilt 2000

Property at a Glance

This home is estimated between $340,022 and $815,261, with a best estimate of $771,914. That places the property below the R224599C - Cat Hollow Sec A Ph 3 median of $778,705, in a neighborhood that appreciated 6.9% over the past year.

Estimated Value Range

$340,022 $815,261
Best Estimate
$771,914
WCAD Value
$697,884
High Confidence

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

Based on 5 comparable properties in R224599C - Cat Hollow Sec A Ph 3, this home's estimated market value is between $340,022 and $815,261. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

16638 CORDILLERA DR, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
3 bed 2 bath 2,306 sqft Built 2000
Raw Value $634,658
Adjusted Value $369,175

Adjusted -$265,483 for 730 sqft less living space. Net adjustment: -$265,483.

16636 CORDILLERA DR, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,477 sqft Built 2000
Raw Value $667,693
Adjusted Value $340,022

Adjusted -$327,671 for 901 sqft less living space. Net adjustment: -$327,671.

16633 MALAGA HILLS DR, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,728 sqft Built 2000
Raw Value $870,540
Adjusted Value $815,261

Adjusted -$55,279 for 152 sqft less living space. Net adjustment: -$55,279.

16634 CORDILLERA DR, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
3 bed 2 bath 1,422 sqft Built 2000
Raw Value $715,908
Adjusted Value $771,914

Adjusted +$56,006 for 154 sqft more living space. Net adjustment: +$56,006.

16634 MALAGA HILLS DR, ROUND ROCK, TX 78681
0.05 mi 100% similar Same subdivision
4 bed 3 bath 1,470 sqft Built 2001
Raw Value $754,851
Adjusted Value $793,734

Adjusted +$38,550 for 106 sqft more living space and +$333 for being newer. Net adjustment: +$38,883.

The Neighborhood

This home is valued 10.4% below the R224599C - Cat Hollow Sec A Ph 3 median of $778,705. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 6.9% over the past year.

R224599C - Cat Hollow Sec A Ph 3

typical
143 Properties
$778,705 Median Value
+6.9% YoY Change
4% Have Pool
100% Have Garage
This Home
$697,884
Median
$778,705

This home is -10.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $13,358 across all districts. With a homestead exemption claimed, that drops to $11,979 — saving $1,379 per year. That's $998 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%$6,233
Brushy Creek MUDMUD0.3868%$2,700
Williamson CountyCounty0.3694%$2,578
Austin Community Collegespecial0.1034%$722
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$698
Williamson County FM/RdCounty0.0443%$309
Upper Brushy Creek WCIDWater0.0170%$119
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$13,358

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $771,914 would pay approximately $4,818 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