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177 KULMBACHER DR, AUSTIN, TX 78728

AUSTIN, 78728 — williamson County

4 bed1,106 sqftBuilt 2020

Property at a Glance

This home is estimated between $404,565 and $465,373, with a best estimate of $429,162. That places the property below the R305419C - TIMMERMANN/KB median of $476,646, in a neighborhood that declined 4.8% over the past year.

Estimated Value Range

$404,565 $465,373
Best Estimate
$429,162
WCAD Value
$476,646
High Confidence

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

Based on 5 comparable properties in R305419C - TIMMERMANN/KB, this home's estimated market value is between $404,565 and $465,373. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

109 SCHNEIDER DR, AUSTIN, TX 78728
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,293 sqft Built 2019
Raw Value $479,613
Adjusted Value $404,565

Adjusted -$75,048 for 187 sqft less living space. Net adjustment: -$75,048.

309 ESPRESSO DR, AUSTIN, TX 78728
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,326 sqft Built 2020
Raw Value $541,233
Adjusted Value $452,941

Adjusted -$88,292 for 220 sqft less living space. Net adjustment: -$88,292.

104 ESPRESSO DR, AUSTIN, TX 78728
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,340 sqft Built 2021
Raw Value $523,072
Adjusted Value $429,162

Adjusted -$93,910 for 234 sqft less living space. Net adjustment: -$93,910.

316 LEIPZIGER DR, AUSTIN, TX 78728
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,261 sqft Built 2019
Raw Value $480,936
Adjusted Value $418,731

Adjusted -$62,205 for 155 sqft less living space. Net adjustment: -$62,205.

108 KULMBACHER DR, AUSTIN, TX 78728
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,129 sqft Built 2019
Raw Value $474,603
Adjusted Value $465,373

Adjusted -$9,230 for 23 sqft less living space. Net adjustment: -$9,230.

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
$476,646
Median
$476,646

This home is +0.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,279 across all districts. With a homestead exemption claimed, that drops to $5,941 — saving $1,338 per year. That's $495 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%$4,257
Williamson CountyCounty0.3694%$1,761
Austin Community Collegespecial0.1034%$493
Williamson County ESD #9 - Round RockESD0.0999%$476
Williamson County FM/RdCounty0.0443%$211
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$7,279

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $429,162 would pay approximately $2,679 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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