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15512 FERNHILL DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,518 sqftBuilt 2005

Property at a Glance

This home is estimated between $532,644 and $769,066, with a best estimate of $643,302. 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

$532,644 $769,066
Best Estimate
$643,302
WCAD Value
$787,572
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 $532,644 and $769,066. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15516 FERNHILL DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,424 sqft Built 2005
Raw Value $644,253
Adjusted Value $677,261

Adjusted +$33,008 for 94 sqft more living space. Net adjustment: +$33,008.

15508 FERNHILL DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,919 sqft Built 2005
Raw Value $784,112
Adjusted Value $643,302

Adjusted -$140,810 for 401 sqft less living space. Net adjustment: -$140,810.

15521 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,213 sqft Built 2003
Raw Value $659,180
Adjusted Value $769,066

Adjusted +$107,100 for 305 sqft more living space and +$2,786 for being newer. Net adjustment: +$109,886.

15513 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,167 sqft Built 2004
Raw Value $759,146
Adjusted Value $532,644

Adjusted -$227,895 for 649 sqft less living space and +$1,393 for being newer. Net adjustment: -$226,502.

15525 FISHER ISLAND DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,739 sqft Built 2003
Raw Value $705,615
Adjusted Value $630,797

Adjusted -$77,604 for 221 sqft less living space and +$2,786 for being newer. Net adjustment: -$74,818.

The Neighborhood

This home is valued 11.2% 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
$787,572
Median
$708,305

This home is +11.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,368 across all districts. With a homestead exemption claimed, that drops to $13,147 — saving $2,221 per year. That's $1,096 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%$7,034
AustinCity0.5240%$4,127
Williamson CountyCounty0.3694%$2,910
Austin Community Collegespecial0.1034%$814
Williamson County FM/RdCounty0.0443%$349
Upper Brushy Creek WCIDWater0.0170%$134
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$15,368

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $643,302 would pay approximately $4,015 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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