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16324 CASTLETROY DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,585 sqftBuilt 2003

Property at a Glance

This home is estimated between $369,063 and $692,466, with a best estimate of $512,931. 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

$369,063 $692,466
Best Estimate
$512,931
WCAD Value
$617,271
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 $369,063 and $692,466 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 $664,521

Adjusted -$5,821 for 19 sqft less living space and +$22,290 for being newer. Net adjustment: +$16,469.

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 $692,466

Adjusted +$123,779 for 404 sqft more living space and -$7,430 for being older. Net adjustment: +$116,349.

8312 CAMBRIA DR, AUSTIN, TX 78717
0.00 mi 100% similar
4 bed 2 bath 1,531 sqft Built 1995
Raw Value $524,836
Adjusted Value $481,941

Adjusted +$16,545 for 54 sqft more living space and -$59,440 for being older. Net adjustment: -$42,895.

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 $369,063

Adjusted -$87,932 for 287 sqft less living space and -$7,430 for being older. Net adjustment: -$95,362.

4 bed 2 bath 1,770 sqft Built 1998
Raw Value $606,762
Adjusted Value $512,931

Adjusted -$56,681 for 185 sqft less living space and -$37,150 for being older. Net adjustment: -$93,831.

The Neighborhood

This home is valued 17.6% 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
$617,271
Median
$524,962

This home is +17.6% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,045 across all districts. With a homestead exemption claimed, that drops to $10,033 — saving $2,012 per year. That's $836 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%$5,513
AustinCity0.5240%$3,235
Williamson CountyCounty0.3694%$2,280
Austin Community Collegespecial0.1034%$638
Williamson County FM/RdCounty0.0443%$274
Upper Brushy Creek WCIDWater0.0170%$105
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,045

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $512,931 would pay approximately $3,202 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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