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4100 LORD BYRON CV, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath1,345 sqftBuilt 1999

Property at a Glance

This home is estimated between $270,361 and $540,354, with a best estimate of $302,661. 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

$270,361 $540,354
Best Estimate
$302,661
WCAD Value
$494,294
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 $270,361 and $540,354. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4114 LORD BYRON CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,984 sqft Built 2000
Raw Value $487,448
Adjusted Value $302,661

Adjusted -$182,822 for 639 sqft less living space and -$1,965 for being older. Net adjustment: -$184,787.

4115 LORD BYRON CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,449 sqft Built 1999
Raw Value $511,885
Adjusted Value $482,130

Adjusted -$29,755 for 104 sqft less living space. Net adjustment: -$29,755.

4107 LORD BYRON CV, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
4 bed 2 bath 2,028 sqft Built 2000
Raw Value $489,608
Adjusted Value $292,232

Adjusted -$195,411 for 683 sqft less living space and -$1,965 for being older. Net adjustment: -$197,376.

3708 HARVEY PENICK DR, ROUND ROCK, TX 78664
0.08 mi 100% similar Same subdivision
4 bed 2 bath 2,179 sqft Built 2002
Raw Value $514,868
Adjusted Value $270,361

Adjusted -$238,613 for 834 sqft less living space and -$5,894 for being older. Net adjustment: -$244,507.

3725 HARVEY PENICK DR, ROUND ROCK, TX 78664
0.08 mi 100% similar Same subdivision
4 bed 2 bath 1,301 sqft Built 2007
Raw Value $543,483
Adjusted Value $540,354

Adjusted +$12,589 for 44 sqft more living space and -$15,718 for being older. Net adjustment: -$3,129.

The Neighborhood

This home is valued 3.9% 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
$494,294
Median
$514,276

This home is -3.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,894 across all districts. With a homestead exemption claimed, that drops to $7,552 — saving $1,342 per year. That's $629 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%$4,415
Round RockCity0.3720%$1,839
Williamson CountyCounty0.3694%$1,826
Austin Community Collegespecial0.1034%$511
Williamson County FM/RdCounty0.0443%$219
Upper Brushy Creek WCIDWater0.0170%$84
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,894

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $302,661 would pay approximately $1,889 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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