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16512 CASTLETROY DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,589 sqftBuilt 2004

Property at a Glance

This home is estimated between $361,932 and $686,262, with a best estimate of $386,880. 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

$361,932 $686,262
Best Estimate
$386,880
WCAD Value
$633,360
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 $361,932 and $686,262 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,604 sqft Built 2006
Raw Value $648,052
Adjusted Value $658,316

Adjusted -$4,596 for 15 sqft less living space and +$14,860 for being newer. Net adjustment: +$10,264.

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 $686,262

Adjusted +$125,005 for 408 sqft more living space and -$14,860 for being older. Net adjustment: +$110,145.

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 $362,858

Adjusted -$86,707 for 283 sqft less living space and -$14,860 for being older. Net adjustment: -$101,567.

15823 DORMAN DR, AUSTIN, TX 78717
0.00 mi 100% similar
3 bed 2 bath 1,686 sqft Built 1998
Raw Value $436,231
Adjusted Value $361,932

Adjusted -$29,719 for 97 sqft less living space and -$44,580 for being older. Net adjustment: -$74,299.

3 bed 2 bath 1,919 sqft Built 2005
Raw Value $480,557
Adjusted Value $386,880

Adjusted -$101,107 for 330 sqft less living space and +$7,430 for being newer. Net adjustment: -$93,677.

The Neighborhood

This home is valued 20.6% 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)

above average
323 Properties
$524,962 Median Value
-2.2% YoY Change
0% Have Pool
100% Have Garage
This Home
$633,360
Median
$524,962

This home is +20.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,359 across all districts. With a homestead exemption claimed, that drops to $10,328 — saving $2,031 per year. That's $861 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%$5,657
AustinCity0.5240%$3,319
Williamson CountyCounty0.3694%$2,340
Austin Community Collegespecial0.1034%$655
Williamson County FM/RdCounty0.0443%$281
Upper Brushy Creek WCIDWater0.0170%$108
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,359

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $386,880 would pay approximately $2,415 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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