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12907 MARIMBA TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath740 sqftBuilt 1991

Property at a Glance

This home is estimated between $318,023 and $517,647, with a best estimate of $434,714. 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

$318,023 $517,647
Best Estimate
$434,714
WCAD Value
$390,006
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 $318,023 and $517,647. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12909 MARIMBA TRL, AUSTIN, TX 78729
0.01 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.

12905 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 516 sqft Built 1991
Raw Value $354,679
Adjusted Value $462,575

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

12911 MARIMBA TRL, AUSTIN, TX 78729
0.02 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.

12903 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 668 sqft Built 1989
Raw Value $367,297
Adjusted Value $421,867

Adjusted +$34,681 for 72 sqft more living space and +$19,889 for being newer. Net adjustment: +$54,570.

12901 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 814 sqft Built 1987
Raw Value $313,888
Adjusted Value $318,023

Adjusted -$35,644 for 74 sqft less living space and +$39,779 for being newer. Net adjustment: +$4,135.

The Neighborhood

This home is valued 16.4% 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
$390,006
Median
$335,104

This home is +16.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,801 across all districts. With a homestead exemption claimed, that drops to $5,478 — saving $1,323 per year. That's $457 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%$3,483
Williamson CountyCounty0.3694%$1,441
North Austin MUD #1MUD0.2165%$844
Austin Community Collegespecial0.1034%$403
Williamson County ESD #1 - Jollyville VFDESD0.1000%$390
Williamson County FM/RdCounty0.0443%$173
Upper Brushy Creek WCIDWater0.0170%$66
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$6,801

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $434,714 would pay approximately $2,713 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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