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12803 MARIMBA TRL, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath670 sqftBuilt 1989

Property at a Glance

This home is estimated between $250,971 and $380,363, with a best estimate of $364,338. 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

$250,971 $380,363
Best Estimate
$364,338
WCAD Value
$366,499
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 $250,971 and $380,363. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

12801 MARIMBA TRL, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 837 sqft Built 1987
Raw Value $311,522
Adjusted Value $250,971

Adjusted -$80,440 for 167 sqft less living space and +$19,889 for being newer. Net adjustment: -$60,551.

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.

12721 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 670 sqft Built 1989
Raw Value $365,347
Adjusted Value $365,347

This comparable closely matches the subject property's features.

12807 MARIMBA TRL, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 670 sqft Built 1989
Raw Value $380,363
Adjusted Value $380,363

This comparable closely matches the subject property's features.

12901 MARIMBA TRL, AUSTIN, TX 78729
0.03 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.

The Neighborhood

This home is valued 9.4% 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

typical
358 Properties
$335,104 Median Value
-8.3% YoY Change
0% Have Pool
97% Have Garage
This Home
$366,499
Median
$335,104

This home is +9.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $6,391 across all districts. With a homestead exemption claimed, that drops to $5,073 — saving $1,318 per year. That's $423 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%$3,273
Williamson CountyCounty0.3694%$1,354
North Austin MUD #1MUD0.2165%$793
Austin Community Collegespecial0.1034%$379
Williamson County ESD #1 - Jollyville VFDESD0.1000%$366
Williamson County FM/RdCounty0.0443%$162
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7438%$6,391

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $364,338 would pay approximately $2,274 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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