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2309 CENTENNIAL LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,933 sqftBuilt 2019

Property at a Glance

This home is estimated between $370,363 and $563,647, with a best estimate of $447,923. That places the property below the R534516C - CONCORD at BRUSHY CREEK median of $648,366, in a neighborhood that declined 2.4% over the past year.

Estimated Value Range

$370,363 $563,647
Best Estimate
$447,923
WCAD Value
$660,679
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R534516C - CONCORD at BRUSHY CREEK. The estimated range of $370,363 and $563,647 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,819 sqft Built 2015
Raw Value $481,016
Adjusted Value $563,647

Adjusted +$37,173 for 114 sqft more living space and +$45,458 for being newer. Net adjustment: +$82,631.

4 bed 2 bath 1,740 sqft Built 2023
Raw Value $352,887
Adjusted Value $370,363

Adjusted +$62,934 for 193 sqft more living space and -$45,458 for being older. Net adjustment: +$17,476.

4 bed 1,707 sqft Built 2018
Raw Value $362,864
Adjusted Value $447,923

Adjusted +$73,694 for 226 sqft more living space and +$11,365 for being newer. Net adjustment: +$85,059.

3 bed 2 bath 1,844 sqft Built 2019
Raw Value $371,248
Adjusted Value $400,269

Adjusted +$29,021 for 89 sqft more living space. Net adjustment: +$29,021.

4 bed 2 bath 1,639 sqft Built 2018
Raw Value $452,285
Adjusted Value $559,518

Adjusted +$95,868 for 294 sqft more living space and +$11,365 for being newer. Net adjustment: +$107,233.

The Neighborhood

This home is valued 1.9% above the R534516C - CONCORD at BRUSHY CREEK median of $648,366. With 203 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.4% over the past year.

R534516C - CONCORD at BRUSHY CREEK

typical
203 Properties
$648,366 Median Value
-2.4% YoY Change
0% Have Pool
100% Have Garage
This Home
$660,679
Median
$648,366

This home is +1.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,887 across all districts. With a homestead exemption claimed, that drops to $10,515 — saving $1,372 per year. That's $876 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
Round Rock ISDSchool0.8931%$5,901
Round RockCity0.3720%$2,458
Williamson CountyCounty0.3694%$2,441
Austin Community Collegespecial0.1034%$683
Williamson County FM/RdCounty0.0443%$293
Upper Brushy Creek WCIDWater0.0170%$112
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$11,887

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $447,923 would pay approximately $2,796 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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