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

5107 CASSIA WAY, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

2 bed2 bath1,706 sqftBuilt 2019

Property at a Glance

This home is estimated between $377,014 and $386,381, with a best estimate of $380,494. That places the property below the R441515C - HERITAGE AT VIZCAYA median of $432,756, in a neighborhood that declined 8.1% over the past year.

Estimated Value Range

$377,014 $386,381
Best Estimate
$380,494
WCAD Value
$395,184
High Confidence

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

Based on 5 comparable properties in R441515C - HERITAGE AT VIZCAYA, this home's estimated market value is between $377,014 and $386,381. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

5100 CASSIA WAY, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
2 bed 2 bath 1,619 sqft Built 2018
Raw Value $360,380
Adjusted Value $379,297

Adjusted +$18,945 for 87 sqft more living space and -$28 for being older. Net adjustment: +$18,917.

5012 CASSIA WAY, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
2 bed 2 bath 1,709 sqft Built 2016
Raw Value $377,751
Adjusted Value $377,014

Adjusted -$653 for 3 sqft less living space and -$84 for being older. Net adjustment: -$737.

5091 CASSIA WAY, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 1,664 sqft Built 2018
Raw Value $377,263
Adjusted Value $386,381

Adjusted +$9,146 for 42 sqft more living space and -$28 for being older. Net adjustment: +$9,118.

5059 CASSIA WAY, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,712 sqft Built 2017
Raw Value $382,031
Adjusted Value $380,668

Adjusted -$1,307 for 6 sqft less living space and -$56 for being older. Net adjustment: -$1,363.

5072 CASSIA WAY, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
2 bed 2 bath 1,607 sqft Built 2018
Raw Value $358,964
Adjusted Value $380,494

Adjusted +$21,558 for 99 sqft more living space and -$28 for being older. Net adjustment: +$21,530.

The Neighborhood

This home is valued 8.7% below the R441515C - HERITAGE AT VIZCAYA median of $432,756. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 8.1% over the past year.

R441515C - HERITAGE AT VIZCAYA

typical
638 Properties
$432,756 Median Value
-8.1% YoY Change
5% Have Pool
100% Have Garage
This Home
$395,184
Median
$432,756

This home is -8.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,110 across all districts. With a homestead exemption claimed, that drops to $5,787 — saving $1,323 per year. That's $482 per month a buyer should budget. The assessed value increased -2.1% vs the subdivision average of -8.1%. This above-average increase gives a protest opportunity score of 30 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,529
Round RockCity0.3720%$1,470
Williamson CountyCounty0.3694%$1,460
Austin Community Collegespecial0.1034%$409
Williamson County FM/RdCounty0.0443%$175
Upper Brushy Creek WCIDWater0.0170%$67
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,110
30 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $380,494 would pay approximately $2,375 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