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3927 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath1,568 sqftBuilt 1999

Property at a Glance

This home is estimated between $265,798 and $569,450, with a best estimate of $469,838. 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

$265,798 $569,450
Best Estimate
$469,838
WCAD Value
$583,023
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 $265,798 and $569,450. 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 $469,838

Adjusted -$31,758 for 111 sqft less living space and -$3,930 for being older. Net adjustment: -$35,688.

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 $541,661

Adjusted -$12,589 for 44 sqft less living space and -$1,965 for being older. Net adjustment: -$14,554.

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 $569,450

Adjusted +$74,960 for 262 sqft more living space and -$1,965 for being older. Net adjustment: +$72,995.

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 $371,974

Adjusted -$125,315 for 438 sqft less living space and -$1,965 for being older. Net adjustment: -$127,280.

3932 LORD BYRON CIR, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,152 sqft Built 1999
Raw Value $432,884
Adjusted Value $265,798

Adjusted -$167,086 for 584 sqft less living space. Net adjustment: -$167,086.

The Neighborhood

This home is valued 13.4% 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
$583,023
Median
$514,276

This home is +13.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,490 across all districts. With a homestead exemption claimed, that drops to $9,132 — saving $1,358 per year. That's $761 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%$5,207
Round RockCity0.3720%$2,169
Williamson CountyCounty0.3694%$2,154
Austin Community Collegespecial0.1034%$603
Williamson County FM/RdCounty0.0443%$258
Upper Brushy Creek WCIDWater0.0170%$99
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$10,490

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $469,838 would pay approximately $2,933 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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