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

5721 ARBIA LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,197 sqftBuilt 2018

Property at a Glance

This home is estimated between $450,691 and $754,359, with a best estimate of $463,041. 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

$450,691 $754,359
Best Estimate
$463,041
WCAD Value
$398,184
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in H121413C - SIENA. The estimated range of $450,691 and $754,359 should be treated as a rough guide.

Comparable Properties (5)

5715 ARBIA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,887 sqft Built 2016
Raw Value $380,697
Adjusted Value $450,691

Adjusted +$65,537 for 310 sqft more living space and +$4,457 for being newer. Net adjustment: +$69,994.

3 bed 2 bath 2,311 sqft Built 2010
Raw Value $469,313
Adjusted Value $463,041

Adjusted -$24,101 for 114 sqft less living space and +$17,829 for being newer. Net adjustment: -$6,272.

3 bed 2 bath 2,380 sqft Built 2016
Raw Value $496,423
Adjusted Value $462,192

Adjusted -$38,688 for 183 sqft less living space and +$4,457 for being newer. Net adjustment: -$34,231.

5810 LUCCA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,528 sqft Built 2018
Raw Value $334,847
Adjusted Value $476,280

Adjusted +$141,433 for 669 sqft more living space. Net adjustment: +$141,433.

3 bed 2,039 sqft Built 2011
Raw Value $705,356
Adjusted Value $754,359

Adjusted +$33,403 for 158 sqft more living space and +$15,600 for being newer. Net adjustment: +$49,003.

The Neighborhood

This home is valued 2.0% below the H121413C - SIENA median of $406,354. That positions it competitively for buyers comparing within the neighborhood. 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
$398,184
Median
$406,354

This home is -2.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,166 across all districts. With a homestead exemption claimed, that drops to $7,405 — saving $1,761 per year. That's $617 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%$4,799
Siena MUD #1MUD0.5250%$2,090
Williamson CountyCounty0.3694%$1,471
Williamson County ESD #3 - HuttoESD0.1000%$398
Williamson County FM/RdCounty0.0443%$177
EWC Higher Ed Centerspecial0.0409%$163
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,166

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $463,041 would pay approximately $2,890 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