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5853 CASSTELLO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,920 sqftBuilt 2016

Property at a Glance

This home is estimated between $289,829 and $570,058, with a best estimate of $396,779. That places the property below the H123414C - SIENA LIMMER LOOP median of $417,399, in a neighborhood that declined 2.7% over the past year.

Estimated Value Range

$289,829 $570,058
Best Estimate
$396,779
WCAD Value
$384,616
Low Confidence

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

There are 5 comparable properties within range, but few are in H123414C - SIENA LIMMER LOOP. The estimated range of $289,829 and $570,058 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,887 sqft Built 2016
Raw Value $423,749
Adjusted Value $430,665

Adjusted +$6,916 for 33 sqft more living space. Net adjustment: +$6,916.

5866 CASSTELLO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,791 sqft Built 2015
Raw Value $368,099
Adjusted Value $396,779

Adjusted +$27,037 for 129 sqft more living space and +$1,643 for being newer. Net adjustment: +$28,680.

6616 LEONARDO DR, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
4 bed 2 bath 2,740 sqft Built 2018
Raw Value $464,980
Adjusted Value $289,829

Adjusted -$171,865 for 820 sqft less living space and -$3,286 for being older. Net adjustment: -$175,151.

4 bed 3 bath 1,575 sqft Built 2017
Raw Value $499,392
Adjusted Value $570,058

Adjusted +$72,309 for 345 sqft more living space and -$1,643 for being older. Net adjustment: +$70,666.

3 bed 1,985 sqft Built 2018
Raw Value $346,545
Adjusted Value $329,636

Adjusted -$13,623 for 65 sqft less living space and -$3,286 for being older. Net adjustment: -$16,909.

The Neighborhood

This home is valued 7.9% below the H123414C - SIENA LIMMER LOOP median of $417,399. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 2.7% over the past year.

H123414C - SIENA LIMMER LOOP

typical
1,146 Properties
$417,399 Median Value
-2.7% YoY Change
0% Have Pool
100% Have Garage
This Home
$384,616
Median
$417,399

This home is -7.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,149 across all districts. With a homestead exemption claimed, that drops to $7,391 — saving $1,758 per year. That's $616 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%$4,635
Siena MUD #2MUD0.6020%$2,315
Williamson CountyCounty0.3694%$1,421
Williamson County ESD #3 - HuttoESD0.1000%$385
Williamson County FM/RdCounty0.0443%$170
EWC Higher Ed Centerspecial0.0409%$157
Upper Brushy Creek WCIDWater0.0170%$65
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3788%$9,149

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $396,779 would pay approximately $2,477 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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