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8520 REGGIO ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,350 sqftBuilt 2014

Property at a Glance

This home is estimated between $290,630 and $530,153, with a best estimate of $417,062. 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

$290,630 $530,153
Best Estimate
$417,062
WCAD Value
$401,566
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $290,630 and $530,153. More comparables in the same subdivision would strengthen this estimate.

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 $372,286

Adjusted -$84,141 for 398 sqft less living space. Net adjustment: -$84,141.

4 bed 1,326 sqft Built 2023
Raw Value $432,046
Adjusted Value $417,062

Adjusted +$5,074 for 24 sqft more living space and -$20,058 for being older. Net adjustment: -$14,984.

8128 ROSANO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,034 sqft Built 2015
Raw Value $465,577
Adjusted Value $530,153

Adjusted +$66,805 for 316 sqft more living space and -$2,229 for being older. Net adjustment: +$64,576.

8104 ROSANO ST, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,347 sqft Built 2015
Raw Value $423,580
Adjusted Value $421,985

Adjusted +$634 for 3 sqft more living space and -$2,229 for being older. Net adjustment: -$1,595.

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 $290,630

Adjusted -$41,013 for 194 sqft less living space and -$6,686 for being older. Net adjustment: -$47,699.

The Neighborhood

This home is valued 1.2% 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
$401,566
Median
$406,354

This home is -1.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,243 across all districts. With a homestead exemption claimed, that drops to $7,482 — saving $1,761 per year. That's $624 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%$4,840
Siena MUD #1MUD0.5250%$2,108
Williamson CountyCounty0.3694%$1,484
Williamson County ESD #9 - Round RockESD0.0999%$401
Williamson County FM/RdCounty0.0443%$178
EWC Higher Ed Centerspecial0.0409%$164
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$9,243

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $417,062 would pay approximately $2,603 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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