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

2508 PORTICI PASS, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,027 sqftBuilt 2019

Property at a Glance

This home is estimated between $343,178 and $750,482, with a best estimate of $675,073. That places the property above the R440515C - VIZCAYA median of $652,212, in a neighborhood that declined 0.6% over the past year.

Estimated Value Range

$343,178 $750,482
Best Estimate
$675,073
WCAD Value
$716,406
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 $343,178 and $750,482. 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 $343,178

Adjusted -$247,017 for 803 sqft less living space. Net adjustment: -$247,017.

2515 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,934 sqft Built 2018
Raw Value $721,874
Adjusted Value $750,482

Adjusted +$28,608 for 93 sqft more living space. Net adjustment: +$28,608.

2504 PORTICI PASS, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,392 sqft Built 2019
Raw Value $527,847
Adjusted Value $415,567

Adjusted -$112,280 for 365 sqft less living space. Net adjustment: -$112,280.

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 $675,073

Adjusted -$91,362 for 297 sqft less living space. Net adjustment: -$91,362.

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 $728,108

Adjusted +$159,038 for 517 sqft more living space. Net adjustment: +$159,038.

The Neighborhood

This home is valued 9.8% 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
$716,406
Median
$652,212

This home is +9.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,890 across all districts. With a homestead exemption claimed, that drops to $11,507 — saving $1,383 per year. That's $959 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%$6,398
Round RockCity0.3720%$2,665
Williamson CountyCounty0.3694%$2,647
Austin Community Collegespecial0.1034%$741
Williamson County FM/RdCounty0.0443%$318
Upper Brushy Creek WCIDWater0.0170%$122
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$12,890

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $675,073 would pay approximately $4,214 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