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

5137 LUNATA WAY, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

2 bed2 bath1,759 sqftBuilt 2020

Property at a Glance

This home is estimated between $386,122 and $394,345, with a best estimate of $388,356. 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

$386,122 $394,345
Best Estimate
$388,356
WCAD Value
$408,354
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 $386,122 and $394,345. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

5121 LUNATA WAY, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
2 bed 2 bath 1,751 sqft Built 2018
Raw Value $392,659
Adjusted Value $394,345

Adjusted +$1,742 for 8 sqft more living space and -$56 for being older. Net adjustment: +$1,686.

5109 LUNATA WAY, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
2 bed 2 bath 1,751 sqft Built 2018
Raw Value $389,193
Adjusted Value $390,879

Adjusted +$1,742 for 8 sqft more living space and -$56 for being older. Net adjustment: +$1,686.

5118 LUNATA WAY, ROUND ROCK, TX 78665
0.00 mi 98% similar Same subdivision
2 bed 2 bath 1,715 sqft Built 2018
Raw Value $378,831
Adjusted Value $388,356

Adjusted +$9,581 for 44 sqft more living space and -$56 for being older. Net adjustment: +$9,525.

5075 LUNATA WAY, ROUND ROCK, TX 78665
0.00 mi 98% similar Same subdivision
2 bed 2 bath 1,750 sqft Built 2016
Raw Value $385,991
Adjusted Value $387,839

Adjusted +$1,960 for 9 sqft more living space and -$112 for being older. Net adjustment: +$1,848.

5065 LUNATA WAY, ROUND ROCK, TX 78665
0.00 mi 98% similar Same subdivision
2 bed 2 bath 1,731 sqft Built 2016
Raw Value $380,137
Adjusted Value $386,122

Adjusted +$6,097 for 28 sqft more living space and -$112 for being older. Net adjustment: +$5,985.

The Neighborhood

This home is valued 5.6% 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
$408,354
Median
$432,756

This home is -5.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $11,638 across all districts. With a homestead exemption claimed, that drops to $8,841 — saving $2,797 per year. That's $737 per month a buyer should budget. The assessed value increased +0.5% vs the subdivision average of -8.1%. This above-average increase gives a protest opportunity score of 43 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Georgetown ISDSchool1.0506%$4,290
Round Rock ISDSchool0.8931%$3,647
Round RockCity0.3720%$1,519
Williamson CountyCounty0.3694%$1,509
Austin Community Collegespecial0.1034%$422
Williamson County FM/RdCounty0.0443%$181
Upper Brushy Creek WCIDWater0.0170%$69
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.8499%$11,638
43 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $388,356 would pay approximately $2,424 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