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12917 MARIMBA TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath692 sqftBuilt 1991

Property at a Glance

This home is estimated between $361,761 and $406,444, with a best estimate of $375,651. 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

$361,761 $406,444
Best Estimate
$375,651
WCAD Value
$392,332
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 $361,761 and $406,444. 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 $361,761

Adjusted -$23,121 for 48 sqft less living space and +$9,945 for being newer. Net adjustment: -$13,176.

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 $394,252

Adjusted +$58,765 for 122 sqft more living space and +$9,945 for being newer. Net adjustment: +$68,710.

12921 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 632 sqft Built 1991
Raw Value $377,543
Adjusted Value $406,444

Adjusted +$28,901 for 60 sqft more living space. Net adjustment: +$28,901.

12913 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 740 sqft Built 1991
Raw Value $398,772
Adjusted Value $375,651

Adjusted -$23,121 for 48 sqft less living space. Net adjustment: -$23,121.

12923 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 740 sqft Built 1991
Raw Value $387,627
Adjusted Value $364,506

Adjusted -$23,121 for 48 sqft less living space. Net adjustment: -$23,121.

The Neighborhood

This home is valued 17.1% 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
$392,332
Median
$335,104

This home is +17.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,841 across all districts. With a homestead exemption claimed, that drops to $5,519 — saving $1,322 per year. That's $460 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%$3,504
Williamson CountyCounty0.3694%$1,449
North Austin MUD #1MUD0.2165%$849
Austin Community Collegespecial0.1034%$406
Williamson County ESD #1 - Jollyville VFDESD0.1000%$392
Williamson County FM/RdCounty0.0443%$174
Upper Brushy Creek WCIDWater0.0170%$67
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$6,841

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $375,651 would pay approximately $2,345 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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