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3996 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,200 sqftBuilt 2001

Property at a Glance

This home is estimated between $456,126 and $506,218, with a best estimate of $475,424. That places the property below the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276, in a neighborhood that declined 8.7% over the past year.

Estimated Value Range

$456,126 $506,218
Best Estimate
$475,424
WCAD Value
$515,486
High Confidence

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

Based on 5 comparable properties in R550600D - Forest Creek Sec 15,16,19,31, this home's estimated market value is between $456,126 and $506,218. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3940 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,200 sqft Built 2005
Raw Value $514,077
Adjusted Value $506,218

Adjusted -$7,859 for being older. Net adjustment: -$7,859.

4006 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 3 bath 1,306 sqft Built 2000
Raw Value $496,455
Adjusted Value $468,093

Adjusted -$30,327 for 106 sqft less living space and +$1,965 for being newer. Net adjustment: -$28,362.

3913 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,235 sqft Built 2000
Raw Value $464,175
Adjusted Value $456,126

Adjusted -$10,014 for 35 sqft less living space and +$1,965 for being newer. Net adjustment: -$8,049.

3987 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,116 sqft Built 2001
Raw Value $475,503
Adjusted Value $499,536

Adjusted +$24,033 for 84 sqft more living space. Net adjustment: +$24,033.

3908 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,207 sqft Built 1999
Raw Value $473,497
Adjusted Value $475,424

Adjusted -$2,003 for 7 sqft less living space and +$3,930 for being newer. Net adjustment: +$1,927.

The Neighborhood

This home is in line with the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276. Note that values in this subdivision declined 8.7% over the past year.

R550600D - Forest Creek Sec 15,16,19,31

typical
274 Properties
$514,276 Median Value
-8.7% YoY Change
0% Have Pool
99% Have Garage
This Home
$515,486
Median
$514,276

This home is +0.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,275 across all districts. With a homestead exemption claimed, that drops to $7,929 — saving $1,346 per year. That's $661 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%$4,604
Round RockCity0.3720%$1,918
Williamson CountyCounty0.3694%$1,904
Austin Community Collegespecial0.1034%$533
Williamson County FM/RdCounty0.0443%$229
Upper Brushy Creek WCIDWater0.0170%$88
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,275

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $475,424 would pay approximately $2,968 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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