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

16507 AVARANCHE WAY, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,444 sqftBuilt 2000

Property at a Glance

This home is estimated between $496,400 and $625,492, with a best estimate of $589,846. That places the property above the R222592G - CAT HOLLOW ALL SECTIONS R4 median of $451,685, in a neighborhood that declined 6.9% over the past year.

Estimated Value Range

$496,400 $625,492
Best Estimate
$589,846
WCAD Value
$582,291
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $496,400 and $625,492. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

16738 MARSALA SPRINGS DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,222 sqft Built 2001
Raw Value $537,386
Adjusted Value $589,846

Adjusted +$59,926 for 222 sqft more living space and -$7,466 for being older. Net adjustment: +$52,460.

16721 MARSALA SPRINGS DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,746 sqft Built 1999
Raw Value $609,595
Adjusted Value $535,540

Adjusted -$81,521 for 302 sqft less living space and +$7,466 for being newer. Net adjustment: -$74,055.

16519 AVARANCHE WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,594 sqft Built 2000
Raw Value $665,983
Adjusted Value $625,492

Adjusted -$40,491 for 150 sqft less living space. Net adjustment: -$40,491.

16550 AVARANCHE WAY, ROUND ROCK, TX 78681
0.00 mi 96% similar Same subdivision
4 bed 3 bath 2,351 sqft Built 2002
Raw Value $756,164
Adjusted Value $496,400

Adjusted -$244,833 for 907 sqft less living space and -$14,931 for being older. Net adjustment: -$259,764.

3 bed 2 bath 1,546 sqft Built 2011
Raw Value $719,626
Adjusted Value $609,971

Adjusted -$27,534 for 102 sqft less living space and -$82,121 for being older. Net adjustment: -$109,655.

The Neighborhood

This home is valued 28.9% above the R222592G - CAT HOLLOW ALL SECTIONS R4 median of $451,685. With 1,233 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 6.9% over the past year.

R222592G - CAT HOLLOW ALL SECTIONS R4

above average
1,233 Properties
$451,685 Median Value
-6.9% YoY Change
1% Have Pool
100% Have Garage
This Home
$582,291
Median
$451,685

This home is +28.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,146 across all districts. With a homestead exemption claimed, that drops to $9,788 — saving $1,358 per year. That's $816 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%$5,200
Brushy Creek MUDMUD0.3868%$2,253
Williamson CountyCounty0.3694%$2,151
Austin Community Collegespecial0.1034%$602
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$582
Williamson County FM/RdCounty0.0443%$258
Upper Brushy Creek WCIDWater0.0170%$99
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$11,146

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $589,846 would pay approximately $3,682 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