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15432 FISHER ISLAND DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,276 sqftBuilt 2004

Property at a Glance

This home is estimated between $514,928 and $704,554, with a best estimate of $616,670. 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

$514,928 $704,554
Best Estimate
$616,670
WCAD Value
$641,644
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 $514,928 and $704,554. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15428 FISHER ISLAND DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,551 sqft Built 2004
Raw Value $661,031
Adjusted Value $564,466

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

15436 FISHER ISLAND DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,875 sqft Built 2004
Raw Value $725,265
Adjusted Value $514,928

Adjusted -$210,337 for 599 sqft less living space. Net adjustment: -$210,337.

15437 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,337 sqft Built 2004
Raw Value $725,974
Adjusted Value $704,554

Adjusted -$21,420 for 61 sqft less living space. Net adjustment: -$21,420.

15433 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,460 sqft Built 2003
Raw Value $724,401
Adjusted Value $661,183

Adjusted -$64,611 for 184 sqft less living space and +$1,393 for being newer. Net adjustment: -$63,218.

15500 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,260 sqft Built 2004
Raw Value $611,052
Adjusted Value $616,670

Adjusted +$5,618 for 16 sqft more living space. Net adjustment: +$5,618.

The Neighborhood

This home is valued 9.4% 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
$641,644
Median
$708,305

This home is -9.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,520 across all districts. With a homestead exemption claimed, that drops to $10,479 — saving $2,041 per year. That's $873 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%$5,731
AustinCity0.5240%$3,362
Williamson CountyCounty0.3694%$2,371
Austin Community Collegespecial0.1034%$663
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%$12,520

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $616,670 would pay approximately $3,849 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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