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15512 WHISTLING STRAITS DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath2,326 sqftBuilt 2002

Property at a Glance

This home is estimated between $572,210 and $1,035,815, with a best estimate of $693,539. 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

$572,210 $1,035,815
Best Estimate
$693,539
WCAD Value
$656,649
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 $572,210 and $1,035,815. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15516 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,477 sqft Built 2002
Raw Value $737,691
Adjusted Value $1,035,815

Adjusted +$298,124 for 849 sqft more living space. Net adjustment: +$298,124.

15508 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,636 sqft Built 2002
Raw Value $616,931
Adjusted Value $859,223

Adjusted +$242,292 for 690 sqft more living space. Net adjustment: +$242,292.

15520 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,483 sqft Built 2002
Raw Value $748,669
Adjusted Value $693,539

Adjusted -$55,130 for 157 sqft less living space. Net adjustment: -$55,130.

15504 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,633 sqft Built 2002
Raw Value $680,012
Adjusted Value $572,210

Adjusted -$107,802 for 307 sqft less living space. Net adjustment: -$107,802.

15509 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,350 sqft Built 2003
Raw Value $647,670
Adjusted Value $637,849

Adjusted -$8,428 for 24 sqft less living space and -$1,393 for being older. Net adjustment: -$9,821.

The Neighborhood

This home is valued 7.3% 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
$656,649
Median
$708,305

This home is -7.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,813 across all districts. With a homestead exemption claimed, that drops to $10,753 — saving $2,060 per year. That's $896 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%$5,865
AustinCity0.5240%$3,441
Williamson CountyCounty0.3694%$2,426
Austin Community Collegespecial0.1034%$679
Williamson County FM/RdCounty0.0443%$291
Upper Brushy Creek WCIDWater0.0170%$112
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,813

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $693,539 would pay approximately $4,329 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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