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3910 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath1,492 sqftBuilt 1999

Property at a Glance

This home is estimated between $350,230 and $585,831, with a best estimate of $519,917. 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

$350,230 $585,831
Best Estimate
$519,917
WCAD Value
$544,717
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 $350,230 and $585,831. 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 $448,094

Adjusted -$53,502 for 187 sqft less living space and -$3,930 for being older. Net adjustment: -$57,432.

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 $519,917

Adjusted -$34,333 for 120 sqft less living space and -$1,965 for being older. Net adjustment: -$36,298.

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 $585,831

Adjusted +$83,543 for 292 sqft more living space and -$11,789 for being older. Net adjustment: +$71,754.

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 $547,706

Adjusted +$53,216 for 186 sqft more living space and -$1,965 for being older. Net adjustment: +$51,251.

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 $350,230

Adjusted -$147,059 for 514 sqft less living space and -$1,965 for being older. Net adjustment: -$149,024.

The Neighborhood

This home is valued 5.9% 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
$544,717
Median
$514,276

This home is +5.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,801 across all districts. With a homestead exemption claimed, that drops to $8,450 — saving $1,351 per year. That's $704 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%$4,865
Round RockCity0.3720%$2,026
Williamson CountyCounty0.3694%$2,012
Austin Community Collegespecial0.1034%$563
Williamson County FM/RdCounty0.0443%$241
Upper Brushy Creek WCIDWater0.0170%$93
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$9,801

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $519,917 would pay approximately $3,245 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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