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11518 POWDER MILL TRL, AUSTIN, TX 78750

AUSTIN, 78750 — williamson County

3 bed2 bath2,034 sqftBuilt 1982

Property at a Glance

This home is estimated between $403,924 and $530,173, with a best estimate of $455,013. That places the property above the R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD median of $387,608, in a neighborhood that declined 7.3% over the past year.

Estimated Value Range

$403,924 $530,173
Best Estimate
$455,013
WCAD Value
$542,953
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $403,924 and $530,173. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

11503 POWDER MILL TRL, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,863 sqft Built 1982
Raw Value $393,006
Adjusted Value $435,127

Adjusted +$42,121 for 171 sqft more living space. Net adjustment: +$42,121.

3 bed 2 bath 2,079 sqft Built 1979
Raw Value $526,284
Adjusted Value $530,173

Adjusted -$11,084 for 45 sqft less living space and +$14,973 for being newer. Net adjustment: +$3,889.

11415 POWDER MILL TRL, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,712 sqft Built 1983
Raw Value $380,688
Adjusted Value $455,013

Adjusted +$79,316 for 322 sqft more living space and -$4,991 for being older. Net adjustment: +$74,325.

3 bed 2 bath 2,072 sqft Built 1979
Raw Value $456,042
Adjusted Value $461,655

Adjusted -$9,360 for 38 sqft less living space and +$14,973 for being newer. Net adjustment: +$5,613.

11505 POWDER MILL TRL, AUSTIN, TX 78750
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,989 sqft Built 1982
Raw Value $392,840
Adjusted Value $403,924

Adjusted +$11,084 for 45 sqft more living space. Net adjustment: +$11,084.

The Neighborhood

This home is valued 40.1% above the R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD median of $387,608. With 834 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 7.3% over the past year.

R3P5480G - Anderson Mill 12,16 - 20 - Partially in TCAD

above average
834 Properties
$387,608 Median Value
-7.3% YoY Change
2% Have Pool
97% Have Garage
This Home
$542,953
Median
$387,608

This home is +40.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,270 across all districts. With a homestead exemption claimed, that drops to $9,350 — saving $1,920 per year. That's $779 per month a buyer should budget. The assessed value increased +21.1% vs the subdivision average of -7.3%. This above-average increase gives a protest opportunity score of 95 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,849
AustinCity0.5240%$2,845
Williamson CountyCounty0.3694%$2,006
Anderson Mill Limited Districtspecial0.1243%$675
Austin Community Collegespecial0.1034%$561
Williamson County FM/RdCounty0.0443%$241
Upper Brushy Creek WCIDWater0.0170%$92
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0756%$11,270
95 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $455,013 would pay approximately $2,840 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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