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3992 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath2,827 sqftBuilt 2000

Property at a Glance

This home is estimated between $497,339 and $832,011, with a best estimate of $537,870. That places the property above 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

$497,339 $832,011
Best Estimate
$537,870
WCAD Value
$507,469
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 $497,339 and $832,011. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

3951 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,679 sqft Built 2001
Raw Value $505,526
Adjusted Value $832,011

Adjusted +$328,450 for 1,148 sqft more living space and -$1,965 for being older. Net adjustment: +$326,485.

4008 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 3 bath 2,036 sqft Built 2000
Raw Value $545,849
Adjusted Value $772,159

Adjusted +$226,310 for 791 sqft more living space. Net adjustment: +$226,310.

3958 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,775 sqft Built 2000
Raw Value $522,992
Adjusted Value $537,870

Adjusted +$14,878 for 52 sqft more living space. Net adjustment: +$14,878.

4003 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,861 sqft Built 2001
Raw Value $509,032
Adjusted Value $497,339

Adjusted -$9,728 for 34 sqft less living space and -$1,965 for being older. Net adjustment: -$11,693.

3946 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,787 sqft Built 2001
Raw Value $505,993
Adjusted Value $515,472

Adjusted +$11,444 for 40 sqft more living space and -$1,965 for being older. Net adjustment: +$9,479.

The Neighborhood

This home is valued 1.3% below the R550600D - Forest Creek Sec 15,16,19,31 median of $514,276. That positions it competitively for buyers comparing within the neighborhood. 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
$507,469
Median
$514,276

This home is -1.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,131 across all districts. With a homestead exemption claimed, that drops to $7,787 — saving $1,344 per year. That's $649 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%$4,532
Round RockCity0.3720%$1,888
Williamson CountyCounty0.3694%$1,875
Austin Community Collegespecial0.1034%$525
Williamson County FM/RdCounty0.0443%$225
Upper Brushy Creek WCIDWater0.0170%$86
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,131

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $537,870 would pay approximately $3,357 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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