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8012 ARBIA CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,904 sqftBuilt 2017

Property at a Glance

This home is estimated between $140,236 and $555,255, with a best estimate of $365,542. That places the property below the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$140,236 $555,255
Best Estimate
$365,542
WCAD Value
$517,602
Low Confidence

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

There are 5 comparable properties within range, but none are in H121413C - SIENA. The estimated range of $140,236 and $555,255 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 2,048 sqft Built 2014
Raw Value $579,012
Adjusted Value $555,255

Adjusted -$30,443 for 144 sqft less living space and +$6,686 for being newer. Net adjustment: -$23,757.

3 bed 2 bath 2,140 sqft Built 2006
Raw Value $390,920
Adjusted Value $365,542

Adjusted -$49,893 for 236 sqft less living space and +$24,515 for being newer. Net adjustment: -$25,378.

4 bed 3 bath 2,372 sqft Built 2025
Raw Value $257,005
Adjusted Value $140,236

Adjusted -$98,940 for 468 sqft less living space and -$17,829 for being older. Net adjustment: -$116,769.

5 bed 4 bath 2,399 sqft Built 2025
Raw Value $608,339
Adjusted Value $485,862

Adjusted -$104,648 for 495 sqft less living space and -$17,829 for being older. Net adjustment: -$122,477.

4 bed 4 bath 2,825 sqft Built 2025
Raw Value $575,139
Adjusted Value $362,602

Adjusted -$194,708 for 921 sqft less living space and -$17,829 for being older. Net adjustment: -$212,537.

The Neighborhood

This home is valued 27.4% 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

above average
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$517,602
Median
$406,354

This home is +27.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,914 across all districts. With a homestead exemption claimed, that drops to $10,132 — saving $1,782 per year. That's $844 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%$6,238
Siena MUD #1MUD0.5250%$2,717
Williamson CountyCounty0.3694%$1,912
Williamson County ESD #3 - HuttoESD0.1000%$518
Williamson County FM/RdCounty0.0443%$229
EWC Higher Ed Centerspecial0.0409%$212
Upper Brushy Creek WCIDWater0.0170%$88
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$11,914

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $365,542 would pay approximately $2,282 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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