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15400 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath1,818 sqftBuilt 2001

Property at a Glance

This home is estimated between $332,620 and $614,187, with a best estimate of $561,553. 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

$332,620 $614,187
Best Estimate
$561,553
WCAD Value
$704,222
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 $332,620 and $614,187. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15404 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 3 bath 2,154 sqft Built 2001
Raw Value $727,563
Adjusted Value $609,578

Adjusted -$117,985 for 336 sqft less living space. Net adjustment: -$117,985.

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 $561,553

Adjusted -$184,001 for 524 sqft less living space. Net adjustment: -$184,001.

15412 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 3 bath 2,709 sqft Built 2001
Raw Value $645,492
Adjusted Value $332,620

Adjusted -$312,872 for 891 sqft less living space. Net adjustment: -$312,872.

15409 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 3 bath 2,153 sqft Built 2001
Raw Value $731,821
Adjusted Value $614,187

Adjusted -$117,634 for 335 sqft less living space. Net adjustment: -$117,634.

15413 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.05 mi 100% similar Same subdivision
3 bed 2 bath 2,093 sqft Built 2001
Raw Value $561,419
Adjusted Value $464,854

Adjusted -$96,565 for 275 sqft less living space. Net adjustment: -$96,565.

The Neighborhood

This home is in line with the R251501D - Avery Ranch South median of $708,305. 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
$704,222
Median
$708,305

This home is -0.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $13,741 across all districts. With a homestead exemption claimed, that drops to $11,623 — saving $2,118 per year. That's $969 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%$6,289
AustinCity0.5240%$3,690
Williamson CountyCounty0.3694%$2,602
Austin Community Collegespecial0.1034%$728
Williamson County FM/RdCounty0.0443%$312
Upper Brushy Creek WCIDWater0.0170%$120
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$13,741

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $561,553 would pay approximately $3,505 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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