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13121 MILL STONE DR, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,380 sqftBuilt 1983

Property at a Glance

This home is estimated between $282,407 and $416,146, with a best estimate of $328,142. That places the property below the R350481H - Anderson Mill Village median of $347,704, in a neighborhood that declined 4.9% over the past year.

Estimated Value Range

$282,407 $416,146
Best Estimate
$328,142
WCAD Value
$388,348
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R350481H - Anderson Mill Village, this home's estimated market value is between $282,407 and $416,146. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

13119 MILL STONE DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,400 sqft Built 1983
Raw Value $421,214
Adjusted Value $416,146

Adjusted -$5,068 for 20 sqft less living space. Net adjustment: -$5,068.

13123 MILL STONE DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,685 sqft Built 1983
Raw Value $398,897
Adjusted Value $321,617

Adjusted -$77,280 for 305 sqft less living space. Net adjustment: -$77,280.

13125 MILL STONE DR, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,651 sqft Built 1983
Raw Value $351,072
Adjusted Value $282,407

Adjusted -$68,665 for 271 sqft less living space. Net adjustment: -$68,665.

13127 MILL STONE DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
2 bed 2 bath 1,380 sqft Built 1983
Raw Value $332,339
Adjusted Value $332,339

This comparable closely matches the subject property's features.

13114 MILL STONE DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,465 sqft Built 1983
Raw Value $349,679
Adjusted Value $328,142

Adjusted -$21,537 for 85 sqft less living space. Net adjustment: -$21,537.

The Neighborhood

This home is valued 11.7% above the R350481H - Anderson Mill Village median of $347,704. With 247 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.9% over the past year.

R350481H - Anderson Mill Village

typical
247 Properties
$347,704 Median Value
-4.9% YoY Change
1% Have Pool
98% Have Garage
This Home
$388,348
Median
$347,704

This home is +11.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,061 across all districts. With a homestead exemption claimed, that drops to $6,332 — saving $1,729 per year. That's $528 per month a buyer should budget. The assessed value increased +9.8% vs the subdivision average of -4.9%. This above-average increase gives a protest opportunity score of 65 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$3,468
AustinCity0.5240%$2,035
Williamson CountyCounty0.3694%$1,435
Anderson Mill Limited Districtspecial0.1243%$483
Austin Community Collegespecial0.1034%$402
Williamson County FM/RdCounty0.0443%$172
Upper Brushy Creek WCIDWater0.0170%$66
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$8,061
65 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $328,142 would pay approximately $2,048 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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