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

15420 INTERLACHEN DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath937 sqftBuilt 2011

Property at a Glance

This home is estimated between $249,610 and $751,278, with a best estimate of $706,697. That places the property below the L572601A - Avery Estates & GOLF CLUB @ AVERY RANCH median of $1,122,350, in a neighborhood that appreciated 11.4% over the past year.

Estimated Value Range

$249,610 $751,278
Best Estimate
$706,697
WCAD Value
$776,961
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in L572601A - Avery Estates & GOLF CLUB @ AVERY RANCH, this home's estimated market value is between $249,610 and $751,278. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15500 INTERLACHEN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 947 sqft Built 2011
Raw Value $716,378
Adjusted Value $711,706

Adjusted -$4,672 for 10 sqft less living space. Net adjustment: -$4,672.

15501 INTERLACHEN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,157 sqft Built 2007
Raw Value $809,484
Adjusted Value $706,697

Adjusted -$102,787 for 220 sqft less living space. Net adjustment: -$102,787.

15404 INTERLACHEN DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 947 sqft Built 2011
Raw Value $755,950
Adjusted Value $751,278

Adjusted -$4,672 for 10 sqft less living space. Net adjustment: -$4,672.

15400 INTERLACHEN DR, AUSTIN, TX 78717
0.05 mi 100% similar Same subdivision
3 bed 2 bath 975 sqft Built 2008
Raw Value $643,482
Adjusted Value $625,728

Adjusted -$17,754 for 38 sqft less living space. Net adjustment: -$17,754.

15416 INTERLACHEN DR, AUSTIN, TX 78717
0.01 mi 97% similar Same subdivision
3 bed 2 bath 1,677 sqft Built 2004
Raw Value $595,349
Adjusted Value $249,610

Adjusted -$345,739 for 740 sqft less living space. Net adjustment: -$345,739.

The Neighborhood

This home is valued 30.8% below the L572601A - Avery Estates & GOLF CLUB @ AVERY RANCH median of $1,122,350. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 11.4% over the past year.

L572601A - Avery Estates & GOLF CLUB @ AVERY RANCH

below average
146 Properties
$1,122,350 Median Value
+11.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$776,961
Median
$1,122,350

This home is -30.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,448 across all districts. With a homestead exemption claimed, that drops to $10,411 — saving $2,037 per year. That's $868 per month a buyer should budget. The assessed value increased +33.9% vs the subdivision average of +11.4%. This above-average increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$5,697
AustinCity0.5240%$3,343
Williamson CountyCounty0.3694%$2,357
Austin Community Collegespecial0.1034%$660
Williamson County FM/RdCounty0.0443%$283
Upper Brushy Creek WCIDWater0.0170%$108
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,448
100 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $706,697 would pay approximately $4,411 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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