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3136 BIANCO CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed3 bath2,480 sqftBuilt 2021

Property at a Glance

This home is estimated between $440,040 and $533,090, with a best estimate of $508,842. 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

$440,040 $533,090
Best Estimate
$508,842
WCAD Value
$511,067
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 $440,040 and $533,090. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3215 BIANCO TER, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,214 sqft Built 2018
Raw Value $475,250
Adjusted Value $533,090

Adjusted +$57,924 for 266 sqft more living space and -$84 for being older. Net adjustment: +$57,840.

3124 BIANCO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 3 bath 3,084 sqft Built 2020
Raw Value $571,594
Adjusted Value $440,040

Adjusted -$131,526 for 604 sqft less living space and -$28 for being older. Net adjustment: -$131,554.

3223 BIANCO TER, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
2 bed 2 bath 2,426 sqft Built 2019
Raw Value $498,494
Adjusted Value $510,197

Adjusted +$11,759 for 54 sqft more living space and -$56 for being older. Net adjustment: +$11,703.

3105 BIANCO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,434 sqft Built 2021
Raw Value $498,825
Adjusted Value $508,842

Adjusted +$10,017 for 46 sqft more living space. Net adjustment: +$10,017.

3144 BIANCO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 3 bath 2,890 sqft Built 2021
Raw Value $547,031
Adjusted Value $457,750

Adjusted -$89,281 for 410 sqft less living space. Net adjustment: -$89,281.

The Neighborhood

This home is valued 18.1% 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
$511,067
Median
$432,756

This home is +18.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,196 across all districts. With a homestead exemption claimed, that drops to $7,851 — saving $1,345 per year. That's $654 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%$4,564
Round RockCity0.3720%$1,901
Williamson CountyCounty0.3694%$1,888
Austin Community Collegespecial0.1034%$528
Williamson County FM/RdCounty0.0443%$227
Upper Brushy Creek WCIDWater0.0170%$87
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,196

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $508,842 would pay approximately $3,176 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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