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8517 REGGIO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,206 sqftBuilt 2014

Property at a Glance

This home is estimated between $389,693 and $471,596, with a best estimate of $429,938. 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

$389,693 $471,596
Best Estimate
$429,938
WCAD Value
$561,864
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 $389,693 and $471,596. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $424,440

Adjusted +$51,795 for 245 sqft more living space and -$6,686 for being older. Net adjustment: +$45,109.

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 $429,938

Adjusted +$6,977 for 33 sqft more living space and -$6,686 for being older. Net adjustment: +$291.

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 $471,596

Adjusted +$139,953 for 662 sqft more living space and -$6,686 for being older. Net adjustment: +$133,267.

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 $389,693

Adjusted -$4,440 for 21 sqft less living space and -$2,229 for being older. Net adjustment: -$6,669.

8050 MOZART ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,610 sqft Built 2016
Raw Value $335,239
Adjusted Value $456,782

Adjusted +$126,000 for 596 sqft more living space and -$4,457 for being older. Net adjustment: +$121,543.

The Neighborhood

This home is valued 38.3% 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

above average
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$561,864
Median
$406,354

This home is +38.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,933 across all districts. With a homestead exemption claimed, that drops to $11,142 — saving $1,791 per year. That's $929 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%$6,772
Siena MUD #1MUD0.5250%$2,950
Williamson CountyCounty0.3694%$2,076
Williamson County ESD #9 - Round RockESD0.0999%$561
Williamson County FM/RdCounty0.0443%$249
EWC Higher Ed Centerspecial0.0409%$230
Upper Brushy Creek WCIDWater0.0170%$96
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$12,933

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $429,938 would pay approximately $2,684 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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