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

8201 REGGIO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,917 sqftBuilt 2014

Property at a Glance

This home is estimated between $328,596 and $507,927, with a best estimate of $368,840. 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

$328,596 $507,927
Best Estimate
$368,840
WCAD Value
$615,885
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 $328,596 and $507,927. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

6041 ROMA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,748 sqft Built 2014
Raw Value $456,427
Adjusted Value $492,155

Adjusted +$35,728 for 169 sqft more living space. Net adjustment: +$35,728.

7836 LEONARDO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,961 sqft Built 2017
Raw Value $379,331
Adjusted Value $363,343

Adjusted -$9,302 for 44 sqft less living space and -$6,686 for being older. Net adjustment: -$15,988.

5608 SAMBUCO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,173 sqft Built 2017
Raw Value $429,647
Adjusted Value $368,840

Adjusted -$54,121 for 256 sqft less living space and -$6,686 for being older. Net adjustment: -$60,807.

5918 PARMA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,227 sqft Built 2015
Raw Value $396,362
Adjusted Value $328,596

Adjusted -$65,537 for 310 sqft less living space and -$2,229 for being older. Net adjustment: -$67,766.

8379 PAOLA ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,313 sqft Built 2015
Raw Value $593,874
Adjusted Value $507,927

Adjusted -$83,718 for 396 sqft less living space and -$2,229 for being older. Net adjustment: -$85,947.

The Neighborhood

This home is valued 51.6% 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

outlier high
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$615,885
Median
$406,354

This home is +51.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,176 across all districts. With a homestead exemption claimed, that drops to $12,375 — saving $1,801 per year. That's $1,031 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%$7,423
Siena MUD #1MUD0.5250%$3,233
Williamson CountyCounty0.3694%$2,275
Williamson County ESD #9 - Round RockESD0.0999%$615
Williamson County FM/RdCounty0.0443%$273
EWC Higher Ed Centerspecial0.0409%$252
Upper Brushy Creek WCIDWater0.0170%$105
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$14,176

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $368,840 would pay approximately $2,302 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