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20 BRENDA LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,651 sqftBuilt 1982

Property at a Glance

This home is estimated between $304,960 and $977,792, with a best estimate of $808,871. That places the property below the R451581F - Jackie Thomison Sub median of $825,132, in a neighborhood that declined 11.3% over the past year.

Estimated Value Range

$304,960 $977,792
Best Estimate
$808,871
WCAD Value
$825,132
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R451581F - Jackie Thomison Sub, this home's estimated market value is between $304,960 and $977,792. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

13 BRENDA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,430 sqft Built 1976
Raw Value $797,482
Adjusted Value $498,993

Adjusted -$298,035 for 779 sqft less living space and -$454 for being older. Net adjustment: -$298,489.

7 BRENDA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,136 sqft Built 1977
Raw Value $994,804
Adjusted Value $808,871

Adjusted -$185,554 for 485 sqft less living space and -$379 for being older. Net adjustment: -$185,933.

23 BRENDA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,440 sqft Built 1987
Raw Value $1,279,274
Adjusted Value $977,792

Adjusted -$301,861 for 789 sqft less living space and +$379 for being newer. Net adjustment: -$301,482.

12 BRENDA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,183 sqft Built 1977
Raw Value $1,162,077
Adjusted Value $958,162

Adjusted -$203,536 for 532 sqft less living space and -$379 for being older. Net adjustment: -$203,915.

15 BRENDA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,762 sqft Built 1976
Raw Value $347,881
Adjusted Value $304,960

Adjusted -$42,467 for 111 sqft less living space and -$454 for being older. Net adjustment: -$42,921.

The Neighborhood

This home is in line with the R451581F - Jackie Thomison Sub median of $825,132. Note that values in this subdivision declined 11.3% over the past year.

R451581F - Jackie Thomison Sub

typical
25 Properties
$825,132 Median Value
-11.3% YoY Change
0% Have Pool
52% Have Garage
This Home
$825,132
Median
$825,132

This home is +0.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,601 across all districts. With a homestead exemption claimed, that drops to $11,199 — saving $1,402 per year. That's $933 per month a buyer should budget. The assessed value increased +8.7% vs the subdivision average of -11.3%. This above-average increase gives a protest opportunity score of 70 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,369
Williamson CountyCounty0.3694%$3,048
Austin Community Collegespecial0.1034%$853
Williamson County ESD #9 - Round RockESD0.0999%$824
Williamson County FM/RdCounty0.0443%$366
Upper Brushy Creek WCIDWater0.0170%$140
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$12,601
70 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $808,871 would pay approximately $5,049 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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