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3981 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed1,649 sqftBuilt 2001

Property at a Glance

This home is estimated between $437,091 and $634,680, with a best estimate of $568,766. 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

$437,091 $634,680
Best Estimate
$568,766
WCAD Value
$500,060
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 $437,091 and $634,680. 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 $496,943

Adjusted -$8,583 for 30 sqft less living space. Net adjustment: -$8,583.

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 $437,091

Adjusted -$110,723 for 387 sqft less living space and +$1,965 for being newer. Net adjustment: -$108,758.

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 $568,766

Adjusted +$10,586 for 37 sqft more living space and +$1,965 for being newer. Net adjustment: +$12,551.

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 $634,680

Adjusted +$128,462 for 449 sqft more living space and -$7,859 for being older. Net adjustment: +$120,603.

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 $596,554

Adjusted +$98,134 for 343 sqft more living space and +$1,965 for being newer. Net adjustment: +$100,099.

The Neighborhood

This home is valued 2.8% 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
$500,060
Median
$514,276

This home is -2.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,997 across all districts. With a homestead exemption claimed, that drops to $7,655 — saving $1,342 per year. That's $638 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%$4,466
Round RockCity0.3720%$1,860
Williamson CountyCounty0.3694%$1,847
Austin Community Collegespecial0.1034%$517
Williamson County FM/RdCounty0.0443%$222
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,997

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $568,766 would pay approximately $3,550 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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