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15500 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath2,542 sqftBuilt 2002

Property at a Glance

This home is estimated between $648,058 and $981,548, with a best estimate of $876,688. That places the property above the R251501D - Avery Ranch South median of $708,305, in a neighborhood that declined 3.8% over the past year.

Estimated Value Range

$648,058 $981,548
Best Estimate
$876,688
WCAD Value
$658,434
High Confidence

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

Based on 5 comparable properties in R251501D - Avery Ranch South, this home's estimated market value is between $648,058 and $981,548. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15504 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,633 sqft Built 2002
Raw Value $680,012
Adjusted Value $648,058

Adjusted -$31,954 for 91 sqft less living space. Net adjustment: -$31,954.

15436 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,376 sqft Built 2002
Raw Value $818,398
Adjusted Value $876,688

Adjusted +$58,290 for 166 sqft more living space. Net adjustment: +$58,290.

15505 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,777 sqft Built 2002
Raw Value $701,753
Adjusted Value $970,381

Adjusted +$268,628 for 765 sqft more living space. Net adjustment: +$268,628.

15512 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,326 sqft Built 2002
Raw Value $656,649
Adjusted Value $732,497

Adjusted +$75,848 for 216 sqft more living space. Net adjustment: +$75,848.

15501 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,804 sqft Built 2003
Raw Value $723,794
Adjusted Value $981,548

Adjusted +$259,147 for 738 sqft more living space and -$1,393 for being older. Net adjustment: +$257,754.

The Neighborhood

This home is valued 7.0% below the R251501D - Avery Ranch South median of $708,305. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 3.8% over the past year.

R251501D - Avery Ranch South

typical
635 Properties
$708,305 Median Value
-3.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$658,434
Median
$708,305

This home is -7.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,848 across all districts. With a homestead exemption claimed, that drops to $10,786 — saving $2,062 per year. That's $899 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%$5,880
AustinCity0.5240%$3,450
Williamson CountyCounty0.3694%$2,433
Austin Community Collegespecial0.1034%$681
Williamson County FM/RdCounty0.0443%$292
Upper Brushy Creek WCIDWater0.0170%$112
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,848

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $876,688 would pay approximately $5,472 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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