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8124 PORTO CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,600 sqftBuilt 2017

Property at a Glance

This home is estimated between $335,851 and $489,481, with a best estimate of $445,989. 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

$335,851 $489,481
Best Estimate
$445,989
WCAD Value
$445,913
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 $335,851 and $489,481. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $447,717

Adjusted -$2,960 for 14 sqft less living space and +$4,457 for being newer. Net adjustment: +$1,497.

8117 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,405 sqft Built 2018
Raw Value $331,557
Adjusted Value $370,553

Adjusted +$41,225 for 195 sqft more living space and -$2,229 for being older. Net adjustment: +$38,996.

8116 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,238 sqft Built 2016
Raw Value $410,722
Adjusted Value $489,481

Adjusted +$76,530 for 362 sqft more living space and +$2,229 for being newer. Net adjustment: +$78,759.

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 $445,989

This comparable closely matches the subject property's features.

8104 PORTO CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,678 sqft Built 2018
Raw Value $354,570
Adjusted Value $335,851

Adjusted -$16,490 for 78 sqft less living space and -$2,229 for being older. Net adjustment: -$18,719.

The Neighborhood

This home is valued 9.7% 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
$445,913
Median
$406,354

This home is +9.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,264 across all districts. With a homestead exemption claimed, that drops to $8,494 — saving $1,770 per year. That's $708 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%$5,374
Siena MUD #1MUD0.5250%$2,341
Williamson CountyCounty0.3694%$1,647
Williamson County ESD #9 - Round RockESD0.0999%$446
Williamson County FM/RdCounty0.0443%$198
EWC Higher Ed Centerspecial0.0409%$182
Upper Brushy Creek WCIDWater0.0170%$76
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$10,264

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $445,989 would pay approximately $2,784 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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