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15508 FERNHILL DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,919 sqftBuilt 2005

Property at a Glance

This home is estimated between $519,835 and $928,382, with a best estimate of $739,607. 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

$519,835 $928,382
Best Estimate
$739,607
WCAD Value
$784,112
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 $519,835 and $928,382. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15504 FERNHILL DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 4 bath 2,063 sqft Built 2004
Raw Value $796,748
Adjusted Value $747,576

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

15512 FERNHILL DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,518 sqft Built 2005
Raw Value $787,572
Adjusted Value $928,382

Adjusted +$140,810 for 401 sqft more living space. Net adjustment: +$140,810.

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 $673,454

Adjusted -$87,085 for 248 sqft less living space and +$1,393 for being newer. Net adjustment: -$85,692.

15517 FISHER ISLAND DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 3 bath 2,299 sqft Built 2004
Raw Value $651,878
Adjusted Value $519,835

Adjusted -$133,436 for 380 sqft less living space and +$1,393 for being newer. Net adjustment: -$132,043.

15500 FERNHILL DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,944 sqft Built 2003
Raw Value $745,600
Adjusted Value $739,607

Adjusted -$8,779 for 25 sqft less living space and +$2,786 for being newer. Net adjustment: -$5,993.

The Neighborhood

This home is valued 10.7% 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
$784,112
Median
$708,305

This home is +10.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,300 across all districts. With a homestead exemption claimed, that drops to $13,083 — saving $2,217 per year. That's $1,090 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%$7,003
AustinCity0.5240%$4,109
Williamson CountyCounty0.3694%$2,897
Austin Community Collegespecial0.1034%$811
Williamson County FM/RdCounty0.0443%$348
Upper Brushy Creek WCIDWater0.0170%$133
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$15,300

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $739,607 would pay approximately $4,617 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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