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16316 CASTLETROY DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,057 sqftBuilt 2003

Property at a Glance

This home is estimated between $207,292 and $585,335, with a best estimate of $522,243. That places the property below 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

$207,292 $585,335
Best Estimate
$522,243
WCAD Value
$543,799
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 $207,292 and $585,335 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 $530,695

Adjusted -$37,992 for 124 sqft less living space and -$7,430 for being older. Net adjustment: -$45,422.

16409 CASTLETROY DR, AUSTIN, TX 78717
0.00 mi 99% similar Same subdivision
3 bed 2 bath 1,872 sqft Built 2002
Raw Value $464,425
Adjusted Value $207,292

Adjusted -$249,703 for 815 sqft less living space and -$7,430 for being older. Net adjustment: -$257,133.

3 bed 2 bath 1,280 sqft Built 2005
Raw Value $638,799
Adjusted Value $585,335

Adjusted -$68,324 for 223 sqft less living space and +$14,860 for being newer. Net adjustment: -$53,464.

4 bed 2 bath 1,243 sqft Built 1993
Raw Value $651,144
Adjusted Value $519,856

Adjusted -$56,988 for 186 sqft less living space and -$74,300 for being older. Net adjustment: -$131,288.

4 bed 2 bath 1,322 sqft Built 1996
Raw Value $655,445
Adjusted Value $522,243

Adjusted -$81,192 for 265 sqft less living space and -$52,010 for being older. Net adjustment: -$133,202.

The Neighborhood

This home is valued 3.6% 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
$543,799
Median
$524,962

This home is +3.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,611 across all districts. With a homestead exemption claimed, that drops to $8,690 — saving $1,921 per year. That's $724 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%$4,857
AustinCity0.5240%$2,850
Williamson CountyCounty0.3694%$2,009
Austin Community Collegespecial0.1034%$562
Williamson County FM/RdCounty0.0443%$241
Upper Brushy Creek WCIDWater0.0170%$92
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$10,611

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $522,243 would pay approximately $3,260 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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