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516/518 GREGORY CT, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath1,042 sqftBuilt 1994

Property at a Glance

This home is estimated between $199,559 and $405,355, with a best estimate of $220,648. That places the property below the R450X - Round Rock East - Duplex median of $355,449, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$199,559 $405,355
Best Estimate
$220,648
WCAD Value
$464,000
High Confidence

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

Based on 5 comparable properties in R450X - Round Rock East - Duplex, this home's estimated market value is between $199,559 and $405,355. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

517/518 WILLOWBEND CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 994 sqft Built 1984
Raw Value $386,026
Adjusted Value $405,355

Adjusted +$9,327 for 48 sqft more living space and +$10,002 for being newer. Net adjustment: +$19,329.

510 GREGORY CT, ROUND ROCK, TX 78664
0.00 mi 93% similar Same subdivision
2 bed 2 bath 1,228 sqft Built 1994
Raw Value $235,701
Adjusted Value $199,559

Adjusted -$36,142 for 186 sqft less living space. Net adjustment: -$36,142.

513/515 TEXAS AVE, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
4 bed 4 bath 2,102 sqft Built 1985
Raw Value $417,617
Adjusted Value $220,648

Adjusted -$205,971 for 1,060 sqft less living space and +$9,002 for being newer. Net adjustment: -$196,969.

510/512 WILLOWBEND CV, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
3 bed 4 bath 1,770 sqft Built 1984
Raw Value $336,657
Adjusted Value $205,200

Adjusted -$141,459 for 728 sqft less living space and +$10,002 for being newer. Net adjustment: -$131,457.

517/519 GREENLAWN BLVD, ROUND ROCK, TX 78664
0.00 mi 91% similar Same subdivision
3 bed 4 bath 1,772 sqft Built 1984
Raw Value $359,798
Adjusted Value $227,952

Adjusted -$141,848 for 730 sqft less living space and +$10,002 for being newer. Net adjustment: -$131,846.

The Neighborhood

This home is valued 30.5% 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

above average
836 Properties
$355,449 Median Value
-8.7% YoY Change
0% Have Pool
84% Have Garage
This Home
$464,000
Median
$355,449

This home is +30.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,349 across all districts. With a homestead exemption claimed, that drops to $7,013 — saving $1,336 per year. That's $584 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%$4,144
Round RockCity0.3720%$1,726
Williamson CountyCounty0.3694%$1,714
Austin Community Collegespecial0.1034%$480
Williamson County FM/RdCounty0.0443%$206
Upper Brushy Creek WCIDWater0.0170%$79
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,349

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $220,648 would pay approximately $1,377 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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