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15524 FISHER ISLAND DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed1,676 sqftBuilt 2003

Property at a Glance

This home is estimated between $450,361 and $755,677, with a best estimate of $625,592. 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

$450,361 $755,677
Best Estimate
$625,592
WCAD Value
$650,017
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 $450,361 and $755,677. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15520 FISHER ISLAND DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 2,050 sqft Built 2003
Raw Value $756,921
Adjusted Value $625,592

Adjusted -$131,329 for 374 sqft less living space. Net adjustment: -$131,329.

15525 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,191 sqft Built 2003
Raw Value $777,225
Adjusted Value $596,384

Adjusted -$180,841 for 515 sqft less living space. Net adjustment: -$180,841.

15529 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
5 bed 4 bath 1,807 sqft Built 2002
Raw Value $724,435
Adjusted Value $679,828

Adjusted -$46,000 for 131 sqft less living space and +$1,393 for being newer. Net adjustment: -$44,607.

15516 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,492 sqft Built 2004
Raw Value $738,290
Adjusted Value $450,361

Adjusted -$286,536 for 816 sqft less living space and -$1,393 for being older. Net adjustment: -$287,929.

15521 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,525 sqft Built 2002
Raw Value $701,261
Adjusted Value $755,677

Adjusted +$53,023 for 151 sqft more living space and +$1,393 for being newer. Net adjustment: +$54,416.

The Neighborhood

This home is valued 8.2% 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
$650,017
Median
$708,305

This home is -8.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,684 across all districts. With a homestead exemption claimed, that drops to $10,632 — saving $2,052 per year. That's $886 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%$5,805
AustinCity0.5240%$3,406
Williamson CountyCounty0.3694%$2,401
Austin Community Collegespecial0.1034%$672
Williamson County FM/RdCounty0.0443%$288
Upper Brushy Creek WCIDWater0.0170%$111
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,684

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $625,592 would pay approximately $3,905 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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