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517/519 GREGORY CT, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath2,253 sqftBuilt 1994

Property at a Glance

This home is estimated between $404,415 and $614,015, with a best estimate of $455,960. That places the property above the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$404,415 $614,015
Best Estimate
$455,960
WCAD Value
$400,887
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $404,415 and $614,015. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

512/514 GREGORY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,253 sqft Built 1994
Raw Value $404,415
Adjusted Value $404,415

This comparable closely matches the subject property's features.

509/511 GREGORY CT, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,121 sqft Built 1995
Raw Value $392,108
Adjusted Value $416,757

Adjusted +$25,649 for 132 sqft more living space and -$1,000 for being older. Net adjustment: +$24,649.

513/515 TEXAS AVE, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 4 bath 2,102 sqft Built 1985
Raw Value $417,617
Adjusted Value $455,960

Adjusted +$29,341 for 151 sqft more living space and +$9,002 for being newer. Net adjustment: +$38,343.

4 bed 2 bath 2,730 sqft Built 1994
Raw Value $706,702
Adjusted Value $614,015

Adjusted -$92,687 for 477 sqft less living space. Net adjustment: -$92,687.

4 bed 2 bath 2,243 sqft Built 1977
Raw Value $478,601
Adjusted Value $539,334

Adjusted +$1,943 for 10 sqft more living space and +$17,003 for being newer and +$41,787 for having a garage. Net adjustment: +$60,733.

The Neighborhood

This home is valued 12.8% above the R450X - Round Rock East - Duplex median of $355,449. With 836 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.7% over the past year.

R450X - Round Rock East - Duplex

typical
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$400,887
Median
$355,449

This home is +12.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,213 across all districts. With a homestead exemption claimed, that drops to $5,889 — saving $1,324 per year. That's $491 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%$3,580
Round RockCity0.3720%$1,491
Williamson CountyCounty0.3694%$1,481
Austin Community Collegespecial0.1034%$415
Williamson County FM/RdCounty0.0443%$178
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,213

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $455,960 would pay approximately $2,846 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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