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15425 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,195 sqftBuilt 2002

Property at a Glance

This home is estimated between $278,220 and $673,325, with a best estimate of $551,422. 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

$278,220 $673,325
Best Estimate
$551,422
WCAD Value
$663,439
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 $278,220 and $673,325. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15433 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,460 sqft Built 2003
Raw Value $724,401
Adjusted Value $629,954

Adjusted -$93,054 for 265 sqft less living space and -$1,393 for being older. Net adjustment: -$94,447.

15424 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,746 sqft Built 2002
Raw Value $744,904
Adjusted Value $551,422

Adjusted -$193,482 for 551 sqft less living space. Net adjustment: -$193,482.

15420 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,023 sqft Built 2001
Raw Value $567,577
Adjusted Value $278,220

Adjusted -$290,750 for 828 sqft less living space and +$1,393 for being newer. Net adjustment: -$289,357.

15428 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,551 sqft Built 2004
Raw Value $661,031
Adjusted Value $533,237

Adjusted -$125,008 for 356 sqft less living space and -$2,786 for being older. Net adjustment: -$127,794.

15437 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,337 sqft Built 2004
Raw Value $725,974
Adjusted Value $673,325

Adjusted -$49,863 for 142 sqft less living space and -$2,786 for being older. Net adjustment: -$52,649.

The Neighborhood

This home is valued 6.3% 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
$663,439
Median
$708,305

This home is -6.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,946 across all districts. With a homestead exemption claimed, that drops to $10,877 — saving $2,069 per year. That's $906 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%$5,925
AustinCity0.5240%$3,477
Williamson CountyCounty0.3694%$2,451
Austin Community Collegespecial0.1034%$686
Williamson County FM/RdCounty0.0443%$294
Upper Brushy Creek WCIDWater0.0170%$113
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,946

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $551,422 would pay approximately $3,442 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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