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3993 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,198 sqftBuilt 2004

Property at a Glance

This home is estimated between $391,122 and $511,540, with a best estimate of $480,746. 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

$391,122 $511,540
Best Estimate
$480,746
WCAD Value
$565,638
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 $391,122 and $511,540. 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 $511,540

Adjusted -$572 for 2 sqft less living space and -$1,965 for being older. Net adjustment: -$2,537.

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 $461,448

Adjusted -$10,586 for 37 sqft less living space and +$7,859 for being newer. Net adjustment: -$2,727.

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 $504,858

Adjusted +$23,461 for 82 sqft more living space and +$5,894 for being newer. Net adjustment: +$29,355.

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 $480,746

Adjusted -$2,575 for 9 sqft less living space and +$9,824 for being newer. Net adjustment: +$7,249.

3945 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,617 sqft Built 2001
Raw Value $505,107
Adjusted Value $391,122

Adjusted -$119,879 for 419 sqft less living space and +$5,894 for being newer. Net adjustment: -$113,985.

The Neighborhood

This home is valued 10.0% above the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276. With 274 homes in the subdivision, the property sits in the upper tier. 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
$565,638
Median
$514,276

This home is +10.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,177 across all districts. With a homestead exemption claimed, that drops to $8,823 — saving $1,354 per year. That's $735 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%$5,052
Round RockCity0.3720%$2,104
Williamson CountyCounty0.3694%$2,090
Austin Community Collegespecial0.1034%$585
Williamson County FM/RdCounty0.0443%$251
Upper Brushy Creek WCIDWater0.0170%$96
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,177

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $480,746 would pay approximately $3,001 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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