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121 KULMBACHER DR, AUSTIN, TX 78728

AUSTIN, 78728 — williamson County

3 bed2 bath1,110 sqftBuilt 2019

Property at a Glance

This home is estimated between $241,723 and $583,176, with a best estimate of $486,838. That places the property above the R305419C - TIMMERMANN/KB median of $476,646, in a neighborhood that declined 4.8% over the past year.

Estimated Value Range

$241,723 $583,176
Best Estimate
$486,838
WCAD Value
$473,596
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R305419C - TIMMERMANN/KB. The estimated range of $241,723 and $583,176 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,767 sqft Built 2012
Raw Value $505,394
Adjusted Value $241,723

Adjusted -$263,671 for 657 sqft less living space. Net adjustment: -$263,671.

4 bed 2 bath 1,005 sqft Built 1996
Raw Value $444,699
Adjusted Value $486,838

Adjusted +$42,139 for 105 sqft more living space. Net adjustment: +$42,139.

4 bed 2 bath 995 sqft Built 1996
Raw Value $443,755
Adjusted Value $489,907

Adjusted +$46,152 for 115 sqft more living space. Net adjustment: +$46,152.

4 bed 2 bath 1,254 sqft Built 1996
Raw Value $453,967
Adjusted Value $396,176

Adjusted -$57,791 for 144 sqft less living space. Net adjustment: -$57,791.

4 bed 3 bath 1,329 sqft Built 2011
Raw Value $671,066
Adjusted Value $583,176

Adjusted -$87,890 for 219 sqft less living space. Net adjustment: -$87,890.

The Neighborhood

This home is in line with the R305419C - TIMMERMANN/KB median of $476,646. Note that values in this subdivision declined 4.8% over the past year.

R305419C - TIMMERMANN/KB

typical
143 Properties
$476,646 Median Value
-4.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$473,596
Median
$476,646

This home is -0.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,233 across all districts. With a homestead exemption claimed, that drops to $5,895 — saving $1,338 per year. That's $491 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%$4,230
Williamson CountyCounty0.3694%$1,750
Austin Community Collegespecial0.1034%$490
Williamson County ESD #9 - Round RockESD0.0999%$473
Williamson County FM/RdCounty0.0443%$210
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$7,233

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $486,838 would pay approximately $3,039 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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