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3983 LORD BYRON CIR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed3 bath1,820 sqftBuilt 2001

Property at a Glance

This home is estimated between $486,015 and $683,604, with a best estimate of $617,690. 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

$486,015 $683,604
Best Estimate
$617,690
WCAD Value
$491,696
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 $486,015 and $683,604. 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 $545,867

Adjusted +$40,341 for 141 sqft more living space. Net adjustment: +$40,341.

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 $486,015

Adjusted -$61,799 for 216 sqft less living space and +$1,965 for being newer. Net adjustment: -$59,834.

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 $617,690

Adjusted +$59,510 for 208 sqft more living space and +$1,965 for being newer. Net adjustment: +$61,475.

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 $683,604

Adjusted +$177,386 for 620 sqft more living space and -$7,859 for being older. Net adjustment: +$169,527.

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 $645,479

Adjusted +$147,059 for 514 sqft more living space and +$1,965 for being newer. Net adjustment: +$149,024.

The Neighborhood

This home is valued 4.4% 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
$491,696
Median
$514,276

This home is -4.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,847 across all districts. With a homestead exemption claimed, that drops to $7,506 — saving $1,341 per year. That's $626 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%$4,391
Round RockCity0.3720%$1,829
Williamson CountyCounty0.3694%$1,817
Austin Community Collegespecial0.1034%$508
Williamson County FM/RdCounty0.0443%$218
Upper Brushy Creek WCIDWater0.0170%$84
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,847

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $617,690 would pay approximately $3,856 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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