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3913 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath1,235 sqftBuilt 2000

Property at a Glance

This home is estimated between $278,666 and $514,267, with a best estimate of $448,353. 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

$278,666 $514,267
Best Estimate
$448,353
WCAD Value
$464,175
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 $278,666 and $514,267. 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 $376,530

Adjusted -$127,031 for 444 sqft less living space and -$1,965 for being older. Net adjustment: -$128,996.

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 $448,353

Adjusted -$107,862 for 377 sqft less living space. Net adjustment: -$107,862.

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 $514,267

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

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 $476,141

Adjusted -$20,314 for 71 sqft less living space. Net adjustment: -$20,314.

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 $278,666

Adjusted -$220,588 for 771 sqft less living space. Net adjustment: -$220,588.

The Neighborhood

This home is valued 9.7% 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
$464,175
Median
$514,276

This home is -9.7% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,352 across all districts. With a homestead exemption claimed, that drops to $7,016 — saving $1,336 per year. That's $585 per month a buyer should budget. The assessed value increased -2.2% vs the subdivision average of -8.7%. This above-average increase gives a protest opportunity score of 33 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,146
Round RockCity0.3720%$1,727
Williamson CountyCounty0.3694%$1,715
Austin Community Collegespecial0.1034%$480
Williamson County FM/RdCounty0.0443%$206
Upper Brushy Creek WCIDWater0.0170%$79
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,352
33 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $448,353 would pay approximately $2,799 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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