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15528 FISHER ISLAND DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath2,406 sqftBuilt 2003

Property at a Glance

This home is estimated between $631,846 and $1,012,015, with a best estimate of $881,929. 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

$631,846 $1,012,015
Best Estimate
$881,929
WCAD Value
$608,096
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 $631,846 and $1,012,015. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15520 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,050 sqft Built 2003
Raw Value $756,921
Adjusted Value $881,929

Adjusted +$125,008 for 356 sqft more living space. Net adjustment: +$125,008.

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 $852,722

Adjusted +$75,497 for 215 sqft more living space. Net adjustment: +$75,497.

15525 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,739 sqft Built 2003
Raw Value $705,615
Adjusted Value $939,830

Adjusted +$234,215 for 667 sqft more living space. Net adjustment: +$234,215.

9528 MORGAN CREEK DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,277 sqft Built 2002
Raw Value $585,155
Adjusted Value $631,846

Adjusted +$45,298 for 129 sqft more living space and +$1,393 for being newer. Net adjustment: +$46,691.

15521 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,525 sqft Built 2002
Raw Value $701,261
Adjusted Value $1,012,015

Adjusted +$309,361 for 881 sqft more living space and +$1,393 for being newer. Net adjustment: +$310,754.

The Neighborhood

This home is valued 14.1% 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
$608,096
Median
$708,305

This home is -14.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $11,866 across all districts. With a homestead exemption claimed, that drops to $9,866 — saving $2,000 per year. That's $822 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%$5,431
AustinCity0.5240%$3,187
Williamson CountyCounty0.3694%$2,247
Austin Community Collegespecial0.1034%$629
Williamson County FM/RdCounty0.0443%$270
Upper Brushy Creek WCIDWater0.0170%$103
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$11,866

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $881,929 would pay approximately $5,505 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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