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15433 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,460 sqftBuilt 2003

Property at a Glance

This home is estimated between $578,146 and $767,772, with a best estimate of $704,862. 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

$578,146 $767,772
Best Estimate
$704,862
WCAD Value
$724,401
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 $578,146 and $767,772. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15437 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,337 sqft Built 2004
Raw Value $725,974
Adjusted Value $767,772

Adjusted +$43,191 for 123 sqft more living space and -$1,393 for being older. Net adjustment: +$41,798.

15425 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,195 sqft Built 2002
Raw Value $663,439
Adjusted Value $757,886

Adjusted +$93,054 for 265 sqft more living space and +$1,393 for being newer. Net adjustment: +$94,447.

15432 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,466 sqft Built 2001
Raw Value $686,203
Adjusted Value $686,882

Adjusted -$2,107 for 6 sqft less living space and +$2,786 for being newer. Net adjustment: +$679.

15436 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,875 sqft Built 2004
Raw Value $725,265
Adjusted Value $578,146

Adjusted -$145,726 for 415 sqft less living space and -$1,393 for being older. Net adjustment: -$147,119.

15432 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,276 sqft Built 2004
Raw Value $641,644
Adjusted Value $704,862

Adjusted +$64,611 for 184 sqft more living space and -$1,393 for being older. Net adjustment: +$63,218.

The Neighborhood

This home is valued 2.3% 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
$724,401
Median
$708,305

This home is +2.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,135 across all districts. With a homestead exemption claimed, that drops to $11,992 — saving $2,143 per year. That's $999 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%$6,470
AustinCity0.5240%$3,796
Williamson CountyCounty0.3694%$2,676
Austin Community Collegespecial0.1034%$749
Williamson County FM/RdCounty0.0443%$321
Upper Brushy Creek WCIDWater0.0170%$123
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$14,135

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $704,862 would pay approximately $4,400 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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