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15313 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath3,098 sqftBuilt 2002

Property at a Glance

This home is estimated between $677,014 and $1,192,273, with a best estimate of $806,756. 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

$677,014 $1,192,273
Best Estimate
$806,756
WCAD Value
$766,281
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 $677,014 and $1,192,273. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15309 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,994 sqft Built 2003
Raw Value $805,999
Adjusted Value $1,192,273

Adjusted +$387,667 for 1,104 sqft more living space and -$1,393 for being older. Net adjustment: +$386,274.

15317 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 3,067 sqft Built 2002
Raw Value $726,150
Adjusted Value $737,036

Adjusted +$10,886 for 31 sqft more living space. Net adjustment: +$10,886.

15312 VALDERRAMA CT, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,367 sqft Built 2003
Raw Value $753,766
Adjusted Value $1,009,062

Adjusted +$256,689 for 731 sqft more living space and -$1,393 for being older. Net adjustment: +$255,296.

15316 VALDERRAMA CT, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 3,330 sqft Built 2004
Raw Value $761,266
Adjusted Value $677,014

Adjusted -$81,466 for 232 sqft less living space and -$2,786 for being older. Net adjustment: -$84,252.

15305 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,965 sqft Built 2003
Raw Value $761,446
Adjusted Value $806,756

Adjusted +$46,703 for 133 sqft more living space and -$1,393 for being older. Net adjustment: +$45,310.

The Neighborhood

This home is valued 8.2% 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
$766,281
Median
$708,305

This home is +8.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,952 across all districts. With a homestead exemption claimed, that drops to $12,757 — saving $2,195 per year. That's $1,063 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%$6,844
AustinCity0.5240%$4,015
Williamson CountyCounty0.3694%$2,831
Austin Community Collegespecial0.1034%$792
Williamson County FM/RdCounty0.0443%$340
Upper Brushy Creek WCIDWater0.0170%$130
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$14,952

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $806,756 would pay approximately $5,036 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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