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15429 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath2,734 sqftBuilt 2003

Property at a Glance

This home is estimated between $658,610 and $985,429, with a best estimate of $790,544. 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

$658,610 $985,429
Best Estimate
$790,544
WCAD Value
$640,053
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 $658,610 and $985,429. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15424 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,029 sqft Built 2004
Raw Value $739,263
Adjusted Value $985,429

Adjusted +$247,559 for 705 sqft more living space and -$1,393 for being older. Net adjustment: +$246,166.

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 $790,544

Adjusted +$225,085 for 641 sqft more living space and +$2,786 for being newer. Net adjustment: +$227,871.

15420 FISHER ISLAND DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,495 sqft Built 2004
Raw Value $621,062
Adjusted Value $703,593

Adjusted +$83,924 for 239 sqft more living space and -$1,393 for being older. Net adjustment: +$82,531.

15417 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,657 sqft Built 2001
Raw Value $628,786
Adjusted Value $658,610

Adjusted +$27,038 for 77 sqft more living space and +$2,786 for being newer. Net adjustment: +$29,824.

15436 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,376 sqft Built 2002
Raw Value $818,398
Adjusted Value $945,502

Adjusted +$125,711 for 358 sqft more living space and +$1,393 for being newer. Net adjustment: +$127,104.

The Neighborhood

This home is valued 9.6% 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
$640,053
Median
$708,305

This home is -9.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,489 across all districts. With a homestead exemption claimed, that drops to $10,450 — saving $2,039 per year. That's $871 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%$5,716
AustinCity0.5240%$3,354
Williamson CountyCounty0.3694%$2,365
Austin Community Collegespecial0.1034%$662
Williamson County FM/RdCounty0.0443%$284
Upper Brushy Creek WCIDWater0.0170%$109
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,489

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $790,544 would pay approximately $4,935 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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