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16200 CASTLETROY DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,490 sqftBuilt 2004

Property at a Glance

This home is estimated between $243,123 and $664,438, with a best estimate of $624,582. 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

$243,123 $664,438
Best Estimate
$624,582
WCAD Value
$460,707
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R250401D - AVERY RANCH EAST (PH. 1). The estimated range of $243,123 and $664,438 should be treated as a rough guide.

Comparable Properties (5)

4 bed 2 bath 1,525 sqft Built 1997
Raw Value $727,171
Adjusted Value $664,438

Adjusted -$10,723 for 35 sqft less living space and -$52,010 for being older. Net adjustment: -$62,733.

4 bed 2 bath 1,455 sqft Built 1991
Raw Value $728,863
Adjusted Value $642,995

Adjusted +$10,723 for 35 sqft more living space and -$96,591 for being older. Net adjustment: -$85,868.

3 bed 2 bath 1,380 sqft Built 1986
Raw Value $508,529
Adjusted Value $408,490

Adjusted +$33,702 for 110 sqft more living space and -$133,741 for being older. Net adjustment: -$100,039.

3 bed 2 bath 1,754 sqft Built 1991
Raw Value $420,599
Adjusted Value $243,123

Adjusted -$80,885 for 264 sqft less living space and -$96,591 for being older. Net adjustment: -$177,476.

4 bed 2 bath 1,639 sqft Built 1995
Raw Value $737,103
Adjusted Value $624,582

Adjusted -$45,651 for 149 sqft less living space and -$66,870 for being older. Net adjustment: -$112,521.

The Neighborhood

This home is valued 12.2% 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
$460,707
Median
$524,962

This home is -12.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,990 across all districts. With a homestead exemption claimed, that drops to $7,171 — saving $1,819 per year. That's $598 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%$4,115
AustinCity0.5240%$2,414
Williamson CountyCounty0.3694%$1,702
Austin Community Collegespecial0.1034%$476
Williamson County FM/RdCounty0.0443%$204
Upper Brushy Creek WCIDWater0.0170%$78
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$8,990

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $624,582 would pay approximately $3,899 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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