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

16721 MARSALA SPRINGS DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,746 sqftBuilt 1999

Property at a Glance

This home is estimated between $570,455 and $811,943, with a best estimate of $663,902. 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

$570,455 $811,943
Best Estimate
$663,902
WCAD Value
$609,595
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 $570,455 and $811,943. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4 bed 1,759 sqft Built 2008
Raw Value $882,642
Adjusted Value $811,943

Adjusted -$3,509 for 13 sqft less living space and -$67,190 for being older. Net adjustment: -$70,699.

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 $699,548

Adjusted +$41,031 for 152 sqft more living space and -$7,466 for being older. Net adjustment: +$33,565.

16507 AVARANCHE WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,444 sqft Built 2000
Raw Value $582,291
Adjusted Value $656,346

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

16550 AVARANCHE WAY, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,351 sqft Built 2002
Raw Value $756,164
Adjusted Value $570,455

Adjusted -$163,312 for 605 sqft less living space and -$22,397 for being older. Net adjustment: -$185,709.

16738 MARSALA SPRINGS DR, ROUND ROCK, TX 78681
0.00 mi 99% similar Same subdivision
4 bed 3 bath 1,222 sqft Built 2001
Raw Value $537,386
Adjusted Value $663,902

Adjusted +$141,447 for 524 sqft more living space and -$14,931 for being older. Net adjustment: +$126,516.

The Neighborhood

This home is valued 35.0% 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
$609,595
Median
$451,685

This home is +35.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,668 across all districts. With a homestead exemption claimed, that drops to $10,305 — saving $1,363 per year. That's $859 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%$5,444
Brushy Creek MUDMUD0.3868%$2,358
Williamson CountyCounty0.3694%$2,252
Austin Community Collegespecial0.1034%$630
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$610
Williamson County FM/RdCounty0.0443%$270
Upper Brushy Creek WCIDWater0.0170%$104
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$11,668

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $663,902 would pay approximately $4,144 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