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5105 ORSINI CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed5 bath2,893 sqftBuilt 2018

Property at a Glance

This home is estimated between $597,762 and $971,395, with a best estimate of $816,655. 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

$597,762 $971,395
Best Estimate
$816,655
WCAD Value
$813,187
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R440515C - VIZCAYA. The estimated range of $597,762 and $971,395 should be treated as a rough guide.

Comparable Properties (5)

3 bed 3,548 sqft Built 2021
Raw Value $1,112,692
Adjusted Value $971,395

Adjusted -$201,490 for 655 sqft less living space and +$60,193 for having a garage. Net adjustment: -$141,297.

4 bed 3 bath 1,965 sqft Built 2014
Raw Value $531,186
Adjusted Value $816,655

Adjusted +$285,469 for 928 sqft more living space. Net adjustment: +$285,469.

5 bed 4 bath 1,864 sqft Built 2017
Raw Value $617,448
Adjusted Value $933,987

Adjusted +$316,539 for 1,029 sqft more living space. Net adjustment: +$316,539.

4 bed 4 bath 2,102 sqft Built 1985
Raw Value $417,617
Adjusted Value $660,943

Adjusted +$243,326 for 791 sqft more living space. Net adjustment: +$243,326.

4 bed 2 bath 2,253 sqft Built 1994
Raw Value $400,887
Adjusted Value $597,762

Adjusted +$196,875 for 640 sqft more living space. Net adjustment: +$196,875.

The Neighborhood

This home is valued 24.7% 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

above average
585 Properties
$652,212 Median Value
-0.6% YoY Change
1% Have Pool
100% Have Garage
This Home
$813,187
Median
$652,212

This home is +24.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,071 across all districts. With a homestead exemption claimed, that drops to $13,450 — saving $1,621 per year. That's $1,121 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%$8,543
Round RockCity0.3720%$3,025
Williamson CountyCounty0.3694%$3,004
Williamson County FM/RdCounty0.0443%$360
Upper Brushy Creek WCIDWater0.0170%$138
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8534%$15,071

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $816,655 would pay approximately $5,098 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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