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15504 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath2,633 sqftBuilt 2002

Property at a Glance

This home is estimated between $690,388 and $908,643, with a best estimate of $764,451. 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

$690,388 $908,643
Best Estimate
$764,451
WCAD Value
$680,012
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 $690,388 and $908,643. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15500 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,542 sqft Built 2002
Raw Value $658,434
Adjusted Value $690,388

Adjusted +$31,954 for 91 sqft more living space. Net adjustment: +$31,954.

15512 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,326 sqft Built 2002
Raw Value $656,649
Adjusted Value $764,451

Adjusted +$107,802 for 307 sqft more living space. Net adjustment: +$107,802.

15436 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,376 sqft Built 2002
Raw Value $818,398
Adjusted Value $908,643

Adjusted +$90,245 for 257 sqft more living space. Net adjustment: +$90,245.

15509 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,350 sqft Built 2003
Raw Value $647,670
Adjusted Value $745,652

Adjusted +$99,375 for 283 sqft more living space and -$1,393 for being older. Net adjustment: +$97,982.

15520 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.05 mi 100% similar Same subdivision
4 bed 2 bath 2,483 sqft Built 2002
Raw Value $748,669
Adjusted Value $801,341

Adjusted +$52,672 for 150 sqft more living space. Net adjustment: +$52,672.

The Neighborhood

This home is valued 4.0% 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
$680,012
Median
$708,305

This home is -4.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $13,269 across all districts. With a homestead exemption claimed, that drops to $11,180 — saving $2,089 per year. That's $932 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%$6,073
AustinCity0.5240%$3,563
Williamson CountyCounty0.3694%$2,512
Austin Community Collegespecial0.1034%$703
Williamson County FM/RdCounty0.0443%$301
Upper Brushy Creek WCIDWater0.0170%$116
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$13,269

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $764,451 would pay approximately $4,772 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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