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3944 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,612 sqftBuilt 2000

Property at a Glance

This home is estimated between $386,528 and $622,129, with a best estimate of $484,392. 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

$386,528 $622,129
Best Estimate
$484,392
WCAD Value
$556,215
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 $386,528 and $622,129. 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 $484,392

Adjusted -$19,169 for 67 sqft less living space and -$1,965 for being older. Net adjustment: -$21,134.

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 $424,540

Adjusted -$121,309 for 424 sqft less living space. Net adjustment: -$121,309.

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 $622,129

Adjusted +$117,876 for 412 sqft more living space and -$9,824 for being older. Net adjustment: +$108,052.

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 $584,004

Adjusted +$87,549 for 306 sqft more living space. Net adjustment: +$87,549.

3905 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,006 sqft Built 2000
Raw Value $499,254
Adjusted Value $386,528

Adjusted -$112,726 for 394 sqft less living space. Net adjustment: -$112,726.

The Neighborhood

This home is valued 8.2% 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
$556,215
Median
$514,276

This home is +8.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,008 across all districts. With a homestead exemption claimed, that drops to $8,655 — saving $1,353 per year. That's $721 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%$4,968
Round RockCity0.3720%$2,069
Williamson CountyCounty0.3694%$2,055
Austin Community Collegespecial0.1034%$575
Williamson County FM/RdCounty0.0443%$247
Upper Brushy Creek WCIDWater0.0170%$95
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,008

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $484,392 would pay approximately $3,024 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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