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15436 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath2,376 sqftBuilt 2002

Property at a Glance

This home is estimated between $589,767 and $1,044,659, with a best estimate of $663,441. 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

$589,767 $1,044,659
Best Estimate
$663,441
WCAD Value
$818,398
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 $589,767 and $1,044,659. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15500 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
3 bed 2 bath 2,542 sqft Built 2002
Raw Value $658,434
Adjusted Value $600,144

Adjusted -$58,290 for 166 sqft less living space. Net adjustment: -$58,290.

15428 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,093 sqft Built 2001
Raw Value $562,673
Adjusted Value $663,441

Adjusted +$99,375 for 283 sqft more living space and +$1,393 for being newer. Net adjustment: +$100,768.

15504 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,633 sqft Built 2002
Raw Value $680,012
Adjusted Value $589,767

Adjusted -$90,245 for 257 sqft less living space. Net adjustment: -$90,245.

15433 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,460 sqft Built 2003
Raw Value $724,401
Adjusted Value $1,044,659

Adjusted +$321,651 for 916 sqft more living space and -$1,393 for being older. Net adjustment: +$320,258.

15424 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,746 sqft Built 2002
Raw Value $744,904
Adjusted Value $966,127

Adjusted +$221,223 for 630 sqft more living space. Net adjustment: +$221,223.

The Neighborhood

This home is valued 15.5% 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

above average
635 Properties
$708,305 Median Value
-3.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$818,398
Median
$708,305

This home is +15.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,969 across all districts. With a homestead exemption claimed, that drops to $13,710 — saving $2,259 per year. That's $1,143 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%$7,309
AustinCity0.5240%$4,289
Williamson CountyCounty0.3694%$3,024
Austin Community Collegespecial0.1034%$846
Williamson County FM/RdCounty0.0443%$363
Upper Brushy Creek WCIDWater0.0170%$139
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$15,969

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $663,441 would pay approximately $4,141 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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