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15317 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath3,067 sqftBuilt 2002

Property at a Glance

This home is estimated between $665,286 and $1,181,387, with a best estimate of $755,395. 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

$665,286 $1,181,387
Best Estimate
$755,395
WCAD Value
$726,150
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 $665,286 and $1,181,387. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15313 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 3,098 sqft Built 2002
Raw Value $766,281
Adjusted Value $755,395

Adjusted -$10,886 for 31 sqft less living space. Net adjustment: -$10,886.

15316 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 3,305 sqft Built 2002
Raw Value $748,859
Adjusted Value $665,286

Adjusted -$83,573 for 238 sqft less living space. Net adjustment: -$83,573.

15316 VALDERRAMA CT, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 3 bath 3,330 sqft Built 2004
Raw Value $761,266
Adjusted Value $666,128

Adjusted -$92,352 for 263 sqft less living space and -$2,786 for being older. Net adjustment: -$95,138.

15401 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,342 sqft Built 2001
Raw Value $745,554
Adjusted Value $1,001,529

Adjusted +$254,582 for 725 sqft more living space and +$1,393 for being newer. Net adjustment: +$255,975.

15309 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,994 sqft Built 2003
Raw Value $805,999
Adjusted Value $1,181,387

Adjusted +$376,781 for 1,073 sqft more living space and -$1,393 for being older. Net adjustment: +$375,388.

The Neighborhood

This home is valued 2.5% 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

typical
635 Properties
$708,305 Median Value
-3.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$726,150
Median
$708,305

This home is +2.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,169 across all districts. With a homestead exemption claimed, that drops to $12,024 — saving $2,145 per year. That's $1,002 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%$6,485
AustinCity0.5240%$3,805
Williamson CountyCounty0.3694%$2,683
Austin Community Collegespecial0.1034%$751
Williamson County FM/RdCounty0.0443%$322
Upper Brushy Creek WCIDWater0.0170%$123
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$14,169

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $755,395 would pay approximately $4,715 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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