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15516 FISHER ISLAND DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath2,492 sqftBuilt 2004

Property at a Glance

This home is estimated between $562,264 and $937,946, with a best estimate of $888,580. 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

$562,264 $937,946
Best Estimate
$888,580
WCAD Value
$738,290
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 $562,264 and $937,946. 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 $913,521

Adjusted +$155,207 for 442 sqft more living space and +$1,393 for being newer. Net adjustment: +$156,600.

15517 WHISTLING STRAITS DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
3 bed 2 bath 2,728 sqft Built 2002
Raw Value $642,349
Adjusted Value $562,264

Adjusted -$82,871 for 236 sqft less living space and +$2,786 for being newer. Net adjustment: -$80,085.

15508 FISHER ISLAND DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,058 sqft Built 2005
Raw Value $737,575
Adjusted Value $888,580

Adjusted +$152,398 for 434 sqft more living space and -$1,393 for being older. Net adjustment: +$151,005.

15524 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 1,676 sqft Built 2003
Raw Value $650,017
Adjusted Value $937,946

Adjusted +$286,536 for 816 sqft more living space and +$1,393 for being newer. Net adjustment: +$287,929.

15513 FISHER ISLAND DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,167 sqft Built 2004
Raw Value $759,146
Adjusted Value $873,269

Adjusted +$114,123 for 325 sqft more living space. Net adjustment: +$114,123.

The Neighborhood

This home is valued 4.2% 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
$738,290
Median
$708,305

This home is +4.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,406 across all districts. With a homestead exemption claimed, that drops to $12,246 — saving $2,160 per year. That's $1,021 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%$6,594
AustinCity0.5240%$3,869
Williamson CountyCounty0.3694%$2,728
Austin Community Collegespecial0.1034%$763
Williamson County FM/RdCounty0.0443%$327
Upper Brushy Creek WCIDWater0.0170%$126
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$14,406

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $888,580 would pay approximately $5,546 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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