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12 BRENDA LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,183 sqftBuilt 1977

Property at a Glance

This home is estimated between $508,874 and $1,291,713, with a best estimate of $1,012,786. That places the property above the R451581F - Jackie Thomison Sub median of $825,132, in a neighborhood that declined 11.3% over the past year.

Estimated Value Range

$508,874 $1,291,713
Best Estimate
$1,012,786
WCAD Value
$1,162,077
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 $508,874 and $1,291,713. 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 $702,907

Adjusted -$94,499 for 247 sqft less living space and -$76 for being older. Net adjustment: -$94,575.

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 $1,012,786

Adjusted +$17,982 for 47 sqft more living space. Net adjustment: +$17,982.

16 BRENDA LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,525 sqft Built 1996
Raw Value $1,421,118
Adjusted Value $1,291,713

Adjusted -$130,844 for 342 sqft less living space and +$1,439 for being newer. Net adjustment: -$129,405.

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 $1,181,706

Adjusted -$98,325 for 257 sqft less living space and +$757 for being newer. Net adjustment: -$97,568.

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 $508,874

Adjusted +$161,069 for 421 sqft more living space and -$76 for being older. Net adjustment: +$160,993.

The Neighborhood

This home is valued 40.8% above the R451581F - Jackie Thomison Sub median of $825,132. With 25 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 11.3% over the past year.

R451581F - Jackie Thomison Sub

above average
25 Properties
$825,132 Median Value
-11.3% YoY Change
0% Have Pool
52% Have Garage
This Home
$1,162,077
Median
$825,132

This home is +40.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,155 across all districts. With a homestead exemption claimed, that drops to $11,745 — saving $1,410 per year. That's $979 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%$7,693
Williamson CountyCounty0.3694%$3,182
Austin Community Collegespecial0.1034%$891
Williamson County ESD #9 - Round RockESD0.0999%$861
Williamson County FM/RdCounty0.0443%$382
Upper Brushy Creek WCIDWater0.0170%$146
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$13,155

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,012,786 would pay approximately $6,322 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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