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3940 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,200 sqftBuilt 2005

Property at a Glance

This home is estimated between $376,340 and $507,395, with a best estimate of $463,985. 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

$376,340 $507,395
Best Estimate
$463,985
WCAD Value
$514,077
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 $376,340 and $507,395. 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 $376,340

Adjusted -$137,045 for 479 sqft less living space and +$7,859 for being newer. Net adjustment: -$129,186.

3944 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,612 sqft Built 2000
Raw Value $556,215
Adjusted Value $448,163

Adjusted -$117,876 for 412 sqft less living space and +$9,824 for being newer. 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 $475,952

Adjusted -$30,327 for 106 sqft less living space and +$9,824 for being newer. Net adjustment: -$20,503.

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 $463,985

Adjusted -$10,014 for 35 sqft less living space and +$9,824 for being newer. Net adjustment: -$190.

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 $507,395

Adjusted +$24,033 for 84 sqft more living space and +$7,859 for being newer. Net adjustment: +$31,892.

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
$514,077
Median
$514,276

This home is -0.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,250 across all districts. With a homestead exemption claimed, that drops to $7,904 — saving $1,346 per year. That's $659 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%$4,591
Round RockCity0.3720%$1,912
Williamson CountyCounty0.3694%$1,899
Austin Community Collegespecial0.1034%$532
Williamson County FM/RdCounty0.0443%$228
Upper Brushy Creek WCIDWater0.0170%$87
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,250

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $463,985 would pay approximately $2,896 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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