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

8524 REGGIO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,048 sqftBuilt 2014

Property at a Glance

This home is estimated between $356,291 and $519,850, with a best estimate of $396,535. 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

$356,291 $519,850
Best Estimate
$396,535
WCAD Value
$381,010
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 $356,291 and $519,850. 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 $519,850

Adjusted +$63,423 for 300 sqft more living space. Net adjustment: +$63,423.

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 $391,038

Adjusted +$18,393 for 87 sqft more living space and -$6,686 for being older. Net adjustment: +$11,707.

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 $396,535

Adjusted -$26,426 for 125 sqft less living space and -$6,686 for being older. Net adjustment: -$33,112.

5637 SACCO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,544 sqft Built 2017
Raw Value $338,329
Adjusted Value $438,193

Adjusted +$106,550 for 504 sqft more living space and -$6,686 for being older. Net adjustment: +$99,864.

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 $356,291

Adjusted -$37,842 for 179 sqft less living space and -$2,229 for being older. Net adjustment: -$40,071.

The Neighborhood

This home is valued 6.2% 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
$381,010
Median
$406,354

This home is -6.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,770 across all districts. With a homestead exemption claimed, that drops to $7,012 — saving $1,758 per year. That's $584 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%$4,592
Siena MUD #1MUD0.5250%$2,000
Williamson CountyCounty0.3694%$1,408
Williamson County ESD #9 - Round RockESD0.0999%$381
Williamson County FM/RdCounty0.0443%$169
EWC Higher Ed Centerspecial0.0409%$156
Upper Brushy Creek WCIDWater0.0170%$65
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,770

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $396,535 would pay approximately $2,475 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