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12913 MARIMBA TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath740 sqftBuilt 1991

Property at a Glance

This home is estimated between $390,006 and $517,647, with a best estimate of $417,372. That places the property above the R390485G - Milwood Sec 28 & 29 median of $335,104, in a neighborhood that declined 8.3% over the past year.

Estimated Value Range

$390,006 $517,647
Best Estimate
$417,372
WCAD Value
$398,772
High Confidence

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

Based on 5 comparable properties in R390485G - Milwood Sec 28 & 29, this home's estimated market value is between $390,006 and $517,647. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12915 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 570 sqft Built 1990
Raw Value $325,542
Adjusted Value $417,372

Adjusted +$81,885 for 170 sqft more living space and +$9,945 for being newer. Net adjustment: +$91,830.

12911 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 670 sqft Built 1989
Raw Value $381,108
Adjusted Value $434,714

Adjusted +$33,717 for 70 sqft more living space and +$19,889 for being newer. Net adjustment: +$53,606.

12909 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 516 sqft Built 1991
Raw Value $409,751
Adjusted Value $517,647

Adjusted +$107,896 for 224 sqft more living space. Net adjustment: +$107,896.

12917 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 692 sqft Built 1991
Raw Value $392,332
Adjusted Value $415,453

Adjusted +$23,121 for 48 sqft more living space. Net adjustment: +$23,121.

12907 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 740 sqft Built 1991
Raw Value $390,006
Adjusted Value $390,006

This comparable closely matches the subject property's features.

The Neighborhood

This home is valued 19.0% above the R390485G - Milwood Sec 28 & 29 median of $335,104. With 358 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.3% over the past year.

R390485G - Milwood Sec 28 & 29

above average
358 Properties
$335,104 Median Value
-8.3% YoY Change
0% Have Pool
97% Have Garage
This Home
$398,772
Median
$335,104

This home is +19.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,954 across all districts. With a homestead exemption claimed, that drops to $5,630 — saving $1,324 per year. That's $469 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%$3,561
Williamson CountyCounty0.3694%$1,473
North Austin MUD #1MUD0.2165%$863
Austin Community Collegespecial0.1034%$412
Williamson County ESD #1 - Jollyville VFDESD0.1000%$399
Williamson County FM/RdCounty0.0443%$177
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$6,954

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $417,372 would pay approximately $2,605 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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