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2531 PORTICI PASS, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

5 bed4 bath2,527 sqftBuilt 2019

Property at a Glance

This home is estimated between $514,207 and $856,977, with a best estimate of $631,089. That places the property below the R440515C - VIZCAYA median of $652,212, in a neighborhood that declined 0.6% over the past year.

Estimated Value Range

$514,207 $856,977
Best Estimate
$631,089
WCAD Value
$804,713
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $514,207 and $856,977. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

2500 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 95% similar Same subdivision
5 bed 4 bath 2,171 sqft Built 2019
Raw Value $747,465
Adjusted Value $856,977

Adjusted +$109,512 for 356 sqft more living space. Net adjustment: +$109,512.

4 bed 3 bath 2,297 sqft Built 2015
Raw Value $443,455
Adjusted Value $514,207

Adjusted +$70,752 for 230 sqft more living space. Net adjustment: +$70,752.

4 bed 3 bath 2,311 sqft Built 2024
Raw Value $564,644
Adjusted Value $631,089

Adjusted +$66,445 for 216 sqft more living space. Net adjustment: +$66,445.

2501 PALAZZO EST, ROUND ROCK, TX 78665
0.05 mi 93% similar Same subdivision
4 bed 3 bath 2,526 sqft Built 2018
Raw Value $542,529
Adjusted Value $542,837

Adjusted +$308 for 1 sqft more living space. Net adjustment: +$308.

2548 PALAZZO EST, ROUND ROCK, TX 78665
0.05 mi 91% similar Same subdivision
4 bed 3 bath 2,381 sqft Built 2019
Raw Value $777,476
Adjusted Value $822,388

Adjusted +$44,912 for 146 sqft more living space. Net adjustment: +$44,912.

The Neighborhood

This home is valued 23.4% above the R440515C - VIZCAYA median of $652,212. With 585 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 0.6% over the past year.

R440515C - VIZCAYA

above average
585 Properties
$652,212 Median Value
-0.6% YoY Change
1% Have Pool
100% Have Garage
This Home
$804,713
Median
$652,212

This home is +23.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,479 across all districts. With a homestead exemption claimed, that drops to $13,080 — saving $1,399 per year. That's $1,090 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%$7,187
Round RockCity0.3720%$2,994
Williamson CountyCounty0.3694%$2,973
Austin Community Collegespecial0.1034%$832
Williamson County FM/RdCounty0.0443%$357
Upper Brushy Creek WCIDWater0.0170%$137
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$14,479

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $631,089 would pay approximately $3,939 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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