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12921 MARIMBA TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath632 sqftBuilt 1991

Property at a Glance

This home is estimated between $332,861 and $365,351, with a best estimate of $350,558. 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

$332,861 $365,351
Best Estimate
$350,558
WCAD Value
$377,543
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 $332,861 and $365,351. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12919 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 740 sqft Built 1990
Raw Value $374,937
Adjusted Value $332,861

Adjusted -$52,021 for 108 sqft less living space and +$9,945 for being newer. Net adjustment: -$42,076.

12923 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 740 sqft Built 1991
Raw Value $387,627
Adjusted Value $335,606

Adjusted -$52,021 for 108 sqft less living space. Net adjustment: -$52,021.

12917 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 692 sqft Built 1991
Raw Value $392,332
Adjusted Value $363,431

Adjusted -$28,901 for 60 sqft less living space. Net adjustment: -$28,901.

12915 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 570 sqft Built 1990
Raw Value $325,542
Adjusted Value $365,351

Adjusted +$29,864 for 62 sqft more living space and +$9,945 for being newer. Net adjustment: +$39,809.

12925 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 708 sqft Built 1990
Raw Value $377,220
Adjusted Value $350,558

Adjusted -$36,607 for 76 sqft less living space and +$9,945 for being newer. Net adjustment: -$26,662.

The Neighborhood

This home is valued 12.7% 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

typical
358 Properties
$335,104 Median Value
-8.3% YoY Change
0% Have Pool
97% Have Garage
This Home
$377,543
Median
$335,104

This home is +12.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,584 across all districts. With a homestead exemption claimed, that drops to $5,263 — saving $1,321 per year. That's $439 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%$3,372
Williamson CountyCounty0.3694%$1,395
North Austin MUD #1MUD0.2165%$817
Austin Community Collegespecial0.1034%$390
Williamson County ESD #1 - Jollyville VFDESD0.1000%$378
Williamson County FM/RdCounty0.0443%$167
Upper Brushy Creek WCIDWater0.0170%$64
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$6,584

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $350,558 would pay approximately $2,188 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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