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3943 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

5 bed4 bath1,080 sqftBuilt 2000

Property at a Glance

This home is estimated between $386,276 and $469,920, with a best estimate of $431,795. 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

$386,276 $469,920
Best Estimate
$431,795
WCAD Value
$462,828
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 $386,276 and $469,920. 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 $469,920

Adjusted -$34,333 for 120 sqft less living space and -$9,824 for being older. Net adjustment: -$44,157.

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 $431,795

Adjusted -$64,660 for 226 sqft less living space. Net adjustment: -$64,660.

3988 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
5 bed 4 bath 1,611 sqft Built 2000
Raw Value $538,198
Adjusted Value $386,276

Adjusted -$151,922 for 531 sqft less living space. Net adjustment: -$151,922.

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 $419,829

Adjusted -$44,346 for 155 sqft less living space. Net adjustment: -$44,346.

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 $439,126

Adjusted -$36,336 for 127 sqft less living space and +$1,965 for being newer. Net adjustment: -$34,371.

The Neighborhood

This home is valued 10.0% 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
$462,828
Median
$514,276

This home is -10.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,328 across all districts. With a homestead exemption claimed, that drops to $6,992 — saving $1,336 per year. That's $583 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%$4,134
Round RockCity0.3720%$1,722
Williamson CountyCounty0.3694%$1,710
Austin Community Collegespecial0.1034%$479
Williamson County FM/RdCounty0.0443%$205
Upper Brushy Creek WCIDWater0.0170%$79
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,328

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $431,795 would pay approximately $2,695 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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