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16524 CASTLETROY DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,240 sqftBuilt 2004

Property at a Glance

This home is estimated between $255,930 and $633,974, with a best estimate of $570,881. 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

$255,930 $633,974
Best Estimate
$570,881
WCAD Value
$552,518
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 $255,930 and $633,974 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 $633,974

Adjusted -$12,255 for 40 sqft less living space and +$7,430 for being newer. Net adjustment: -$4,825.

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 $579,334

Adjusted +$18,077 for 59 sqft more living space and -$14,860 for being older. Net adjustment: +$3,217.

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 $255,930

Adjusted -$193,635 for 632 sqft less living space and -$14,860 for being older. Net adjustment: -$208,495.

4 bed 2 bath 1,243 sqft Built 1993
Raw Value $651,144
Adjusted Value $568,494

Adjusted -$919 for 3 sqft less living space and -$81,731 for being older. Net adjustment: -$82,650.

4 bed 2 bath 1,322 sqft Built 1996
Raw Value $655,445
Adjusted Value $570,881

Adjusted -$25,124 for 82 sqft less living space and -$59,440 for being older. Net adjustment: -$84,564.

The Neighborhood

This home is valued 5.2% 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
$552,518
Median
$524,962

This home is +5.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,781 across all districts. With a homestead exemption claimed, that drops to $8,850 — saving $1,931 per year. That's $738 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%$4,935
AustinCity0.5240%$2,895
Williamson CountyCounty0.3694%$2,041
Austin Community Collegespecial0.1034%$571
Williamson County FM/RdCounty0.0443%$245
Upper Brushy Creek WCIDWater0.0170%$94
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$10,781

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $570,881 would pay approximately $3,563 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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