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16205 CASTLETROY DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,219 sqftBuilt 2003

Property at a Glance

This home is estimated between $256,926 and $634,970, with a best estimate of $571,877. That places the property above the R250401D - AVERY RANCH EAST (PH. 1) median of $524,962, in a neighborhood that declined 2.2% over the past year.

Estimated Value Range

$256,926 $634,970
Best Estimate
$571,877
WCAD Value
$548,895
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R250401D - AVERY RANCH EAST (PH. 1). The estimated range of $256,926 and $634,970 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 1,280 sqft Built 2005
Raw Value $638,799
Adjusted Value $634,970

Adjusted -$18,689 for 61 sqft less living space and +$14,860 for being newer. Net adjustment: -$3,829.

16425 CASTLETROY DR, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,181 sqft Built 2002
Raw Value $576,117
Adjusted Value $580,330

Adjusted +$11,643 for 38 sqft more living space and -$7,430 for being older. Net adjustment: +$4,213.

16409 CASTLETROY DR, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,872 sqft Built 2002
Raw Value $464,425
Adjusted Value $256,926

Adjusted -$200,069 for 653 sqft less living space and -$7,430 for being older. Net adjustment: -$207,499.

4 bed 2 bath 1,243 sqft Built 1993
Raw Value $651,144
Adjusted Value $569,491

Adjusted -$7,353 for 24 sqft less living space and -$74,300 for being older. Net adjustment: -$81,653.

4 bed 2 bath 1,322 sqft Built 1996
Raw Value $655,445
Adjusted Value $571,877

Adjusted -$31,558 for 103 sqft less living space and -$52,010 for being older. Net adjustment: -$83,568.

The Neighborhood

This home is valued 4.6% above the R250401D - AVERY RANCH EAST (PH. 1) median of $524,962. With 323 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.2% over the past year.

R250401D - AVERY RANCH EAST (PH. 1)

typical
323 Properties
$524,962 Median Value
-2.2% YoY Change
0% Have Pool
100% Have Garage
This Home
$548,895
Median
$524,962

This home is +4.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,711 across all districts. With a homestead exemption claimed, that drops to $8,784 — saving $1,927 per year. That's $732 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%$4,902
AustinCity0.5240%$2,876
Williamson CountyCounty0.3694%$2,028
Austin Community Collegespecial0.1034%$568
Williamson County FM/RdCounty0.0443%$243
Upper Brushy Creek WCIDWater0.0170%$93
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$10,711

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $571,877 would pay approximately $3,570 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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