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15813 BELFIN DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath1,361 sqftBuilt 2005

Property at a Glance

This home is estimated between $554,648 and $667,193, with a best estimate of $574,467. 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

$554,648 $667,193
Best Estimate
$574,467
WCAD Value
$638,497
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 $554,648 and $667,193. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15805 BELFIN DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 3 bath 1,607 sqft Built 2005
Raw Value $657,467
Adjusted Value $571,085

Adjusted -$86,382 for 246 sqft less living space. Net adjustment: -$86,382.

9229 CASTLE PINES DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,657 sqft Built 2006
Raw Value $659,981
Adjusted Value $554,648

Adjusted -$103,940 for 296 sqft less living space and -$1,393 for being older. Net adjustment: -$105,333.

15808 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,377 sqft Built 2005
Raw Value $640,243
Adjusted Value $634,625

Adjusted -$5,618 for 16 sqft less living space. Net adjustment: -$5,618.

9305 CASTLE PINES DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,540 sqft Built 2005
Raw Value $730,048
Adjusted Value $667,193

Adjusted -$62,855 for 179 sqft less living space. Net adjustment: -$62,855.

9209 LAGUNA WOODS DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
4 bed 3 bath 1,842 sqft Built 2007
Raw Value $746,155
Adjusted Value $574,467

Adjusted -$168,902 for 481 sqft less living space and -$2,786 for being older. Net adjustment: -$171,688.

The Neighborhood

This home is valued 9.9% 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
$638,497
Median
$708,305

This home is -9.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,459 across all districts. With a homestead exemption claimed, that drops to $10,421 — saving $2,038 per year. That's $868 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%$5,702
AustinCity0.5240%$3,346
Williamson CountyCounty0.3694%$2,359
Austin Community Collegespecial0.1034%$660
Williamson County FM/RdCounty0.0443%$283
Upper Brushy Creek WCIDWater0.0170%$109
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,459

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $574,467 would pay approximately $3,586 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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