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16417 CASTLETROY DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,126 sqftBuilt 2002

Property at a Glance

This home is estimated between $235,862 and $613,906, with a best estimate of $550,814. 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

$235,862 $613,906
Best Estimate
$550,814
WCAD Value
$509,863
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 $235,862 and $613,906 should be treated as a rough guide.

Comparable Properties (5)

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 $559,266

Adjusted -$16,851 for 55 sqft less living space. Net adjustment: -$16,851.

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 $235,862

Adjusted -$228,563 for 746 sqft less living space. Net adjustment: -$228,563.

3 bed 2 bath 1,280 sqft Built 2005
Raw Value $638,799
Adjusted Value $613,906

Adjusted -$47,183 for 154 sqft less living space and +$22,290 for being newer. Net adjustment: -$24,893.

4 bed 2 bath 1,243 sqft Built 1993
Raw Value $651,144
Adjusted Value $548,427

Adjusted -$35,847 for 117 sqft less living space and -$66,870 for being older. Net adjustment: -$102,717.

4 bed 2 bath 1,322 sqft Built 1996
Raw Value $655,445
Adjusted Value $550,814

Adjusted -$60,051 for 196 sqft less living space and -$44,580 for being older. Net adjustment: -$104,631.

The Neighborhood

This home is valued 2.9% below the R250401D - AVERY RANCH EAST (PH. 1) median of $524,962. That positions it competitively for buyers comparing within the neighborhood. 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
$509,863
Median
$524,962

This home is -2.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,949 across all districts. With a homestead exemption claimed, that drops to $8,070 — saving $1,879 per year. That's $673 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%$4,554
AustinCity0.5240%$2,672
Williamson CountyCounty0.3694%$1,884
Austin Community Collegespecial0.1034%$527
Williamson County FM/RdCounty0.0443%$226
Upper Brushy Creek WCIDWater0.0170%$87
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$9,949

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $550,814 would pay approximately $3,438 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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