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1010 TWIN TERRACE CT, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath1,580 sqftBuilt 1999

Property at a Glance

This home is estimated between $494,108 and $635,971, with a best estimate of $521,699. 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

$494,108 $635,971
Best Estimate
$521,699
WCAD Value
$631,702
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 $494,108 and $635,971. 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 $635,971

Adjusted -$16,013 for 49 sqft less living space. Net adjustment: -$16,013.

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 $494,108

Adjusted -$43,465 for 133 sqft less living space. Net adjustment: -$43,465.

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 $516,346

Adjusted -$25,164 for 77 sqft less living space. Net adjustment: -$25,164.

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 $599,661

Adjusted +$110,459 for 338 sqft more living space. Net adjustment: +$110,459.

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 $521,699

Adjusted -$20,915 for 64 sqft less living space. Net adjustment: -$20,915.

The Neighborhood

This home is valued 18.3% 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

above average
269 Properties
$533,875 Median Value
+4.6% YoY Change
0% Have Pool
99% Have Garage
This Home
$631,702
Median
$533,875

This home is +18.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,366 across all districts. With a homestead exemption claimed, that drops to $9,999 — saving $1,367 per year. That's $833 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%$5,642
Round RockCity0.3720%$2,350
Williamson CountyCounty0.3694%$2,334
Austin Community Collegespecial0.1034%$653
Williamson County FM/RdCounty0.0443%$280
Upper Brushy Creek WCIDWater0.0170%$107
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$11,366

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $521,699 would pay approximately $3,256 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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