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15404 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath2,154 sqftBuilt 2001

Property at a Glance

This home is estimated between $450,605 and $822,207, with a best estimate of $679,538. 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

$450,605 $822,207
Best Estimate
$679,538
WCAD Value
$727,563
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 $450,605 and $822,207. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15408 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,466 sqft Built 2002
Raw Value $616,861
Adjusted Value $505,910

Adjusted -$109,558 for 312 sqft less living space and -$1,393 for being older. Net adjustment: -$110,951.

15400 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,818 sqft Built 2001
Raw Value $704,222
Adjusted Value $822,207

Adjusted +$117,985 for 336 sqft more living space. Net adjustment: +$117,985.

15412 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 3 bath 2,709 sqft Built 2001
Raw Value $645,492
Adjusted Value $450,605

Adjusted -$194,887 for 555 sqft less living space. Net adjustment: -$194,887.

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 $679,538

Adjusted -$66,016 for 188 sqft less living space. Net adjustment: -$66,016.

15409 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,153 sqft Built 2001
Raw Value $731,821
Adjusted Value $732,172

Adjusted +$351 for 1 sqft more living space. Net adjustment: +$351.

The Neighborhood

This home is valued 2.7% 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
$727,563
Median
$708,305

This home is +2.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,197 across all districts. With a homestead exemption claimed, that drops to $12,050 — saving $2,147 per year. That's $1,004 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%$6,498
AustinCity0.5240%$3,813
Williamson CountyCounty0.3694%$2,688
Austin Community Collegespecial0.1034%$752
Williamson County FM/RdCounty0.0443%$323
Upper Brushy Creek WCIDWater0.0170%$124
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$14,197

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $679,538 would pay approximately $4,242 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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