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15421 FISHER ISLAND DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath1,310 sqftBuilt 2004

Property at a Glance

This home is estimated between $467,470 and $653,583, with a best estimate of $530,986. 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

$467,470 $653,583
Best Estimate
$530,986
WCAD Value
$620,433
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 $467,470 and $653,583. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15424 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
5 bed 3 bath 1,966 sqft Built 2004
Raw Value $761,339
Adjusted Value $530,986

Adjusted -$230,353 for 656 sqft less living space. Net adjustment: -$230,353.

15428 FISHER ISLAND DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,551 sqft Built 2004
Raw Value $661,031
Adjusted Value $576,405

Adjusted -$84,626 for 241 sqft less living space. Net adjustment: -$84,626.

15433 FISHER ISLAND DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 3 bath 2,098 sqft Built 2004
Raw Value $749,201
Adjusted Value $472,497

Adjusted -$276,704 for 788 sqft less living space. Net adjustment: -$276,704.

15432 FISHER ISLAND DR, AUSTIN, TX 78717
0.05 mi 100% similar Same subdivision
3 bed 2 bath 1,276 sqft Built 2004
Raw Value $641,644
Adjusted Value $653,583

Adjusted +$11,939 for 34 sqft more living space. Net adjustment: +$11,939.

15408 FISHER ISLAND DR, AUSTIN, TX 78717
0.05 mi 100% similar Same subdivision
4 bed 3 bath 2,056 sqft Built 2004
Raw Value $729,426
Adjusted Value $467,470

Adjusted -$261,956 for 746 sqft less living space. Net adjustment: -$261,956.

The Neighborhood

This home is valued 12.4% 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
$620,433
Median
$708,305

This home is -12.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,106 across all districts. With a homestead exemption claimed, that drops to $10,091 — saving $2,015 per year. That's $841 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%$5,541
AustinCity0.5240%$3,251
Williamson CountyCounty0.3694%$2,292
Austin Community Collegespecial0.1034%$642
Williamson County FM/RdCounty0.0443%$275
Upper Brushy Creek WCIDWater0.0170%$105
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,106

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $530,986 would pay approximately $3,314 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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