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12929 MARIMBA TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath740 sqftBuilt 1991

Property at a Glance

This home is estimated between $272,900 and $452,612, with a best estimate of $387,627. 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

$272,900 $452,612
Best Estimate
$387,627
WCAD Value
$402,152
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 $272,900 and $452,612. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12927 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 516 sqft Built 1991
Raw Value $344,716
Adjusted Value $452,612

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

12931 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 811 sqft Built 1987
Raw Value $267,320
Adjusted Value $272,900

Adjusted -$34,199 for 71 sqft less living space and +$39,779 for being newer. Net adjustment: +$5,580.

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 $402,579

Adjusted +$15,414 for 32 sqft more living space and +$9,945 for being newer. Net adjustment: +$25,359.

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

This comparable closely matches the subject property's features.

12924 MARIMBA TRL, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 839 sqft Built 1986
Raw Value $362,176
Adjusted Value $364,213

Adjusted -$47,686 for 99 sqft less living space and +$49,723 for being newer. Net adjustment: +$2,037.

The Neighborhood

This home is valued 20.0% 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
$402,152
Median
$335,104

This home is +20.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,013 across all districts. With a homestead exemption claimed, that drops to $5,688 — saving $1,325 per year. That's $474 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%$3,592
Williamson CountyCounty0.3694%$1,486
North Austin MUD #1MUD0.2165%$871
Austin Community Collegespecial0.1034%$416
Williamson County ESD #1 - Jollyville VFDESD0.1000%$402
Williamson County FM/RdCounty0.0443%$178
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$7,013

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $387,627 would pay approximately $2,420 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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