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15808 BELFIN DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath1,377 sqftBuilt 2005

Property at a Glance

This home is estimated between $527,456 and $672,811, with a best estimate of $576,703. 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

$527,456 $672,811
Best Estimate
$576,703
WCAD Value
$640,243
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 $527,456 and $672,811. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15716 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,970 sqft Built 2005
Raw Value $735,686
Adjusted Value $527,456

Adjusted -$208,230 for 593 sqft less living space. Net adjustment: -$208,230.

15813 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,361 sqft Built 2005
Raw Value $638,497
Adjusted Value $644,115

Adjusted +$5,618 for 16 sqft more living space. Net adjustment: +$5,618.

15805 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,607 sqft Built 2005
Raw Value $657,467
Adjusted Value $576,703

Adjusted -$80,764 for 230 sqft less living space. Net adjustment: -$80,764.

9316 CASTLE PINES DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,914 sqft Built 2005
Raw Value $734,740
Adjusted Value $546,174

Adjusted -$188,566 for 537 sqft less living space. Net adjustment: -$188,566.

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 $672,811

Adjusted -$57,237 for 163 sqft less living space. Net adjustment: -$57,237.

The Neighborhood

This home is valued 9.6% 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
$640,243
Median
$708,305

This home is -9.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,493 across all districts. With a homestead exemption claimed, that drops to $10,453 — saving $2,040 per year. That's $871 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%$5,718
AustinCity0.5240%$3,355
Williamson CountyCounty0.3694%$2,365
Austin Community Collegespecial0.1034%$662
Williamson County FM/RdCounty0.0443%$284
Upper Brushy Creek WCIDWater0.0170%$109
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,493

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $576,703 would pay approximately $3,600 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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