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2515 PORTICI PASS, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,934 sqftBuilt 2018

Property at a Glance

This home is estimated between $314,570 and $699,500, with a best estimate of $646,464. 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

$314,570 $699,500
Best Estimate
$646,464
WCAD Value
$721,874
High Confidence

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

Based on 5 comparable properties in R440515C - VIZCAYA, this home's estimated market value is between $314,570 and $699,500. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

2511 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,830 sqft Built 2018
Raw Value $590,195
Adjusted Value $314,570

Adjusted -$275,625 for 896 sqft less living space. Net adjustment: -$275,625.

2508 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,027 sqft Built 2019
Raw Value $716,406
Adjusted Value $687,798

Adjusted -$28,608 for 93 sqft less living space. Net adjustment: -$28,608.

2519 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,324 sqft Built 2019
Raw Value $766,435
Adjusted Value $646,464

Adjusted -$119,971 for 390 sqft less living space. Net adjustment: -$119,971.

2507 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 3 bath 1,510 sqft Built 2020
Raw Value $569,070
Adjusted Value $699,500

Adjusted +$130,430 for 424 sqft more living space. Net adjustment: +$130,430.

2523 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,296 sqft Built 2020
Raw Value $508,355
Adjusted Value $396,997

Adjusted -$111,358 for 362 sqft less living space. Net adjustment: -$111,358.

The Neighborhood

This home is valued 10.7% 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

typical
585 Properties
$652,212 Median Value
-0.6% YoY Change
1% Have Pool
100% Have Garage
This Home
$721,874
Median
$652,212

This home is +10.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,989 across all districts. With a homestead exemption claimed, that drops to $11,605 — saving $1,384 per year. That's $967 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%$6,447
Round RockCity0.3720%$2,685
Williamson CountyCounty0.3694%$2,667
Austin Community Collegespecial0.1034%$746
Williamson County FM/RdCounty0.0443%$320
Upper Brushy Creek WCIDWater0.0170%$123
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$12,989

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $646,464 would pay approximately $4,035 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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