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12807 MARIMBA TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath670 sqftBuilt 1989

Property at a Glance

This home is estimated between $264,415 and $408,968, with a best estimate of $366,499. 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

$264,415 $408,968
Best Estimate
$366,499
WCAD Value
$380,363
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 $264,415 and $408,968. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12901 MARIMBA TRL, AUSTIN, TX 78729
0.00 mi 100% similar Same subdivision
3 bed 2 bath 814 sqft Built 1987
Raw Value $313,888
Adjusted Value $264,415

Adjusted -$69,362 for 144 sqft less living space and +$19,889 for being newer. Net adjustment: -$49,473.

12903 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 668 sqft Built 1989
Raw Value $367,297
Adjusted Value $368,260

Adjusted +$963 for 2 sqft more living space. Net adjustment: +$963.

12805 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 620 sqft Built 1987
Raw Value $320,365
Adjusted Value $364,338

Adjusted +$24,084 for 50 sqft more living space and +$19,889 for being newer. Net adjustment: +$43,973.

12905 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 516 sqft Built 1991
Raw Value $354,679
Adjusted Value $408,968

Adjusted +$74,178 for 154 sqft more living space and -$19,889 for being older. Net adjustment: +$54,289.

12803 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 670 sqft Built 1989
Raw Value $366,499
Adjusted Value $366,499

This comparable closely matches the subject property's features.

The Neighborhood

This home is valued 13.5% 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
$380,363
Median
$335,104

This home is +13.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,633 across all districts. With a homestead exemption claimed, that drops to $5,312 — saving $1,321 per year. That's $443 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%$3,397
Williamson CountyCounty0.3694%$1,405
North Austin MUD #1MUD0.2165%$823
Austin Community Collegespecial0.1034%$393
Williamson County ESD #1 - Jollyville VFDESD0.1000%$380
Williamson County FM/RdCounty0.0443%$169
Upper Brushy Creek WCIDWater0.0170%$65
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$6,633

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $366,499 would pay approximately $2,288 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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