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

8217 REGGIO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,034 sqftBuilt 2014

Property at a Glance

This home is estimated between $353,331 and $516,890, with a best estimate of $393,575. 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

$353,331 $516,890
Best Estimate
$393,575
WCAD Value
$382,226
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 $353,331 and $516,890. 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 $516,890

Adjusted +$60,463 for 286 sqft more living space. Net adjustment: +$60,463.

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 $388,078

Adjusted +$15,433 for 73 sqft more living space and -$6,686 for being older. Net adjustment: +$8,747.

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 $393,575

Adjusted -$29,386 for 139 sqft less living space and -$6,686 for being older. Net adjustment: -$36,072.

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 $435,234

Adjusted +$103,591 for 490 sqft more living space and -$6,686 for being older. Net adjustment: +$96,905.

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 $353,331

Adjusted -$40,802 for 193 sqft less living space and -$2,229 for being older. Net adjustment: -$43,031.

The Neighborhood

This home is valued 5.9% 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
$382,226
Median
$406,354

This home is -5.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,798 across all districts. With a homestead exemption claimed, that drops to $7,040 — saving $1,758 per year. That's $587 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%$4,607
Siena MUD #1MUD0.5250%$2,007
Williamson CountyCounty0.3694%$1,412
Williamson County ESD #9 - Round RockESD0.0999%$382
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%$8,798

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $393,575 would pay approximately $2,457 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