Beta Williamson County, TX only — data and coverage are limited during early access.

15520 FERNHILL DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath2,503 sqftBuilt 2005

Property at a Glance

This home is estimated between $660,489 and $989,182, with a best estimate of $896,965. 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

$660,489 $989,182
Best Estimate
$896,965
WCAD Value
$646,082
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 $660,489 and $989,182. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

9625 MORGAN CREEK DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,120 sqft Built 2004
Raw Value $761,083
Adjusted Value $896,965

Adjusted +$134,489 for 383 sqft more living space and +$1,393 for being newer. Net adjustment: +$135,882.

15517 FERNHILL DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,363 sqft Built 2004
Raw Value $609,935
Adjusted Value $660,489

Adjusted +$49,161 for 140 sqft more living space and +$1,393 for being newer. Net adjustment: +$50,554.

15517 FISHER ISLAND DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 3 bath 2,299 sqft Built 2004
Raw Value $651,878
Adjusted Value $724,905

Adjusted +$71,634 for 204 sqft more living space and +$1,393 for being newer. Net adjustment: +$73,027.

15508 FERNHILL DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,919 sqft Built 2005
Raw Value $784,112
Adjusted Value $989,182

Adjusted +$205,070 for 584 sqft more living space. Net adjustment: +$205,070.

15513 FERNHILL DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 3 bath 2,200 sqft Built 2004
Raw Value $799,327
Adjusted Value $907,118

Adjusted +$106,398 for 303 sqft more living space and +$1,393 for being newer. Net adjustment: +$107,791.

The Neighborhood

This home is valued 8.8% 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
$646,082
Median
$708,305

This home is -8.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,607 across all districts. With a homestead exemption claimed, that drops to $10,560 — saving $2,047 per year. That's $880 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%$5,770
AustinCity0.5240%$3,386
Williamson CountyCounty0.3694%$2,387
Austin Community Collegespecial0.1034%$668
Williamson County FM/RdCounty0.0443%$286
Upper Brushy Creek WCIDWater0.0170%$110
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,607

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $896,965 would pay approximately $5,599 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.

View full property details