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15504 FERNHILL DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed4 bath2,063 sqftBuilt 2004

Property at a Glance

This home is estimated between $569,007 and $915,202, with a best estimate of $788,780. 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

$569,007 $915,202
Best Estimate
$788,780
WCAD Value
$796,748
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 $569,007 and $915,202. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15500 FERNHILL DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,944 sqft Built 2003
Raw Value $745,600
Adjusted Value $788,780

Adjusted +$41,787 for 119 sqft more living space and +$1,393 for being newer. Net adjustment: +$43,180.

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 $833,284

Adjusted +$50,565 for 144 sqft more living space and -$1,393 for being older. Net adjustment: +$49,172.

15513 FISHER ISLAND DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,167 sqft Built 2004
Raw Value $759,146
Adjusted Value $722,627

Adjusted -$36,519 for 104 sqft less living space. Net adjustment: -$36,519.

15517 FISHER ISLAND DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,299 sqft Built 2004
Raw Value $651,878
Adjusted Value $569,007

Adjusted -$82,871 for 236 sqft less living space. Net adjustment: -$82,871.

15425 FERNHILL DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,825 sqft Built 2004
Raw Value $831,629
Adjusted Value $915,202

Adjusted +$83,573 for 238 sqft more living space. Net adjustment: +$83,573.

The Neighborhood

This home is valued 12.5% 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
$796,748
Median
$708,305

This home is +12.5% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,547 across all districts. With a homestead exemption claimed, that drops to $13,314 — saving $2,233 per year. That's $1,110 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%$7,116
AustinCity0.5240%$4,175
Williamson CountyCounty0.3694%$2,944
Austin Community Collegespecial0.1034%$824
Williamson County FM/RdCounty0.0443%$353
Upper Brushy Creek WCIDWater0.0170%$135
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$15,547

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $788,780 would pay approximately $4,924 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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