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1003 TWIN TERRACE CT, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,576 sqftBuilt 1999

Property at a Glance

This home is estimated between $492,801 and $634,664, with a best estimate of $520,392. That places the property below the R501598E - Forest Ridge, Small Lots median of $533,875, in a neighborhood that appreciated 4.6% over the past year.

Estimated Value Range

$492,801 $634,664
Best Estimate
$520,392
WCAD Value
$548,110
High Confidence

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

Based on 5 comparable properties in R501598E - Forest Ridge, Small Lots, this home's estimated market value is between $492,801 and $634,664. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1022 TWIN TERRACE CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,629 sqft Built 1999
Raw Value $651,984
Adjusted Value $634,664

Adjusted -$17,320 for 53 sqft less living space. Net adjustment: -$17,320.

1019 TWIN TERRACE CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,713 sqft Built 1999
Raw Value $537,573
Adjusted Value $492,801

Adjusted -$44,772 for 137 sqft less living space. Net adjustment: -$44,772.

1017 TWIN TERRACE CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,657 sqft Built 1999
Raw Value $541,510
Adjusted Value $515,039

Adjusted -$26,471 for 81 sqft less living space. Net adjustment: -$26,471.

1012 TWIN TERRACE CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,242 sqft Built 1999
Raw Value $489,202
Adjusted Value $598,354

Adjusted +$109,152 for 334 sqft more living space. Net adjustment: +$109,152.

1020 TWIN TERRACE CT, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,644 sqft Built 1999
Raw Value $542,614
Adjusted Value $520,392

Adjusted -$22,222 for 68 sqft less living space. Net adjustment: -$22,222.

The Neighborhood

This home is valued 2.7% above the R501598E - Forest Ridge, Small Lots median of $533,875. With 269 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 4.6% over the past year.

R501598E - Forest Ridge, Small Lots

typical
269 Properties
$533,875 Median Value
+4.6% YoY Change
0% Have Pool
99% Have Garage
This Home
$548,110
Median
$533,875

This home is +2.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,862 across all districts. With a homestead exemption claimed, that drops to $8,510 — saving $1,352 per year. That's $709 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%$4,895
Round RockCity0.3720%$2,039
Williamson CountyCounty0.3694%$2,025
Austin Community Collegespecial0.1034%$567
Williamson County FM/RdCounty0.0443%$243
Upper Brushy Creek WCIDWater0.0170%$93
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,862

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $520,392 would pay approximately $3,248 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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