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8105 PORTO CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath2,297 sqftBuilt 2015

Property at a Glance

This home is estimated between $408,493 and $621,810, with a best estimate of $588,884. That places the property above the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$408,493 $621,810
Best Estimate
$588,884
WCAD Value
$443,455
High Confidence

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

Based on 5 comparable properties in H121413C - SIENA, this home's estimated market value is between $408,493 and $621,810. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8112 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,600 sqft Built 2017
Raw Value $445,989
Adjusted Value $588,884

Adjusted +$147,352 for 697 sqft more living space and -$4,457 for being older. Net adjustment: +$142,895.

8101 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,256 sqft Built 2019
Raw Value $408,739
Adjusted Value $408,493

Adjusted +$8,668 for 41 sqft more living space and -$8,914 for being older. Net adjustment: -$246.

8109 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,311 sqft Built 2024
Raw Value $564,644
Adjusted Value $541,626

Adjusted -$2,960 for 14 sqft less living space and -$20,058 for being older. Net adjustment: -$23,018.

8100 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,614 sqft Built 2015
Raw Value $446,220
Adjusted Value $590,613

Adjusted +$144,393 for 683 sqft more living space. Net adjustment: +$144,393.

8108 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
4 bed 3 bath 1,316 sqft Built 2017
Raw Value $418,874
Adjusted Value $621,810

Adjusted +$207,393 for 981 sqft more living space and -$4,457 for being older. Net adjustment: +$202,936.

The Neighborhood

This home is valued 9.1% above the H121413C - SIENA median of $406,354. With 1,611 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.4% over the past year.

H121413C - SIENA

typical
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$443,455
Median
$406,354

This home is +9.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,207 across all districts. With a homestead exemption claimed, that drops to $8,438 — saving $1,769 per year. That's $703 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
Hutto ISDSchool1.2052%$5,345
Siena MUD #1MUD0.5250%$2,328
Williamson CountyCounty0.3694%$1,638
Williamson County ESD #9 - Round RockESD0.0999%$443
Williamson County FM/RdCounty0.0443%$197
EWC Higher Ed Centerspecial0.0409%$181
Upper Brushy Creek WCIDWater0.0170%$75
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,207

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $588,884 would pay approximately $3,676 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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