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15516 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,477 sqftBuilt 2002

Property at a Glance

This home is estimated between $358,525 and $684,406, with a best estimate of $561,099. That places the property below the R251501D - Avery Ranch South median of $708,305, in a neighborhood that declined 3.8% over the past year.

Estimated Value Range

$358,525 $684,406
Best Estimate
$561,099
WCAD Value
$737,691
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 $358,525 and $684,406. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15520 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 2,483 sqft Built 2002
Raw Value $748,669
Adjusted Value $395,415

Adjusted -$353,254 for 1,006 sqft less living space. Net adjustment: -$353,254.

15512 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 2,326 sqft Built 2002
Raw Value $656,649
Adjusted Value $358,525

Adjusted -$298,124 for 849 sqft less living space. Net adjustment: -$298,124.

15508 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,636 sqft Built 2002
Raw Value $616,931
Adjusted Value $561,099

Adjusted -$55,832 for 159 sqft less living space. Net adjustment: -$55,832.

15521 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,525 sqft Built 2002
Raw Value $701,261
Adjusted Value $684,406

Adjusted -$16,855 for 48 sqft less living space. Net adjustment: -$16,855.

15513 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,427 sqft Built 2002
Raw Value $657,530
Adjusted Value $675,087

Adjusted +$17,557 for 50 sqft more living space. Net adjustment: +$17,557.

The Neighborhood

This home is valued 4.1% above the R251501D - Avery Ranch South median of $708,305. With 635 homes in the subdivision, the property sits in the upper tier. 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
$737,691
Median
$708,305

This home is +4.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,395 across all districts. With a homestead exemption claimed, that drops to $12,235 — saving $2,160 per year. That's $1,020 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%$6,588
AustinCity0.5240%$3,866
Williamson CountyCounty0.3694%$2,725
Austin Community Collegespecial0.1034%$763
Williamson County FM/RdCounty0.0443%$327
Upper Brushy Creek WCIDWater0.0170%$125
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$14,395

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $561,099 would pay approximately $3,502 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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