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5128 CORNETTO BLFS, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath2,458 sqftBuilt 2019

Property at a Glance

This home is estimated between $482,538 and $588,817, with a best estimate of $520,758. That places the property above the R441515C - HERITAGE AT VIZCAYA median of $432,756, in a neighborhood that declined 8.1% over the past year.

Estimated Value Range

$482,538 $588,817
Best Estimate
$520,758
WCAD Value
$498,706
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 $482,538 and $588,817. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

5108 CORNETTO BLFS, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
2 bed 2 bath 1,961 sqft Built 2019
Raw Value $480,591
Adjusted Value $588,817

Adjusted +$108,226 for 497 sqft more living space. Net adjustment: +$108,226.

5164 CORNETTO BLFS, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
2 bed 2 bath 2,155 sqft Built 2019
Raw Value $460,556
Adjusted Value $526,537

Adjusted +$65,981 for 303 sqft more living space. Net adjustment: +$65,981.

5120 CORNETTO BLFS, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,462 sqft Built 2020
Raw Value $505,243
Adjusted Value $504,400

Adjusted -$871 for 4 sqft less living space and +$28 for being newer. Net adjustment: -$843.

5200 CORNETTO BLFS, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 3 bath 2,117 sqft Built 2018
Raw Value $446,530
Adjusted Value $520,758

Adjusted +$74,256 for 341 sqft more living space and -$28 for being older. Net adjustment: +$74,228.

5104 CORNETTO BLFS, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
2 bed 2 bath 2,574 sqft Built 2020
Raw Value $507,770
Adjusted Value $482,538

Adjusted -$25,260 for 116 sqft less living space and +$28 for being newer. Net adjustment: -$25,232.

The Neighborhood

This home is valued 15.2% above the R441515C - HERITAGE AT VIZCAYA median of $432,756. With 638 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.1% over the past year.

R441515C - HERITAGE AT VIZCAYA

above average
638 Properties
$432,756 Median Value
-8.1% YoY Change
5% Have Pool
100% Have Garage
This Home
$498,706
Median
$432,756

This home is +15.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,243 across all districts. With a homestead exemption claimed, that drops to $7,680 — saving $1,563 per year. That's $640 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
Georgetown ISDSchool1.0506%$5,239
Round RockCity0.3720%$1,855
Williamson CountyCounty0.3694%$1,842
Williamson County FM/RdCounty0.0443%$221
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8534%$9,243

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $520,758 would pay approximately $3,251 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.

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