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

15804 BELFIN DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

5 bed4 bath2,257 sqftBuilt 2005

Property at a Glance

This home is estimated between $577,995 and $872,979, with a best estimate of $627,352. 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

$577,995 $872,979
Best Estimate
$627,352
WCAD Value
$819,466
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 $577,995 and $872,979. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15716 BELFIN DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 3 bath 1,970 sqft Built 2005
Raw Value $735,686
Adjusted Value $836,465

Adjusted +$100,779 for 287 sqft more living space. Net adjustment: +$100,779.

9308 CASTLE PINES DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,279 sqft Built 2005
Raw Value $585,720
Adjusted Value $577,995

Adjusted -$7,725 for 22 sqft less living space. Net adjustment: -$7,725.

15712 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 1,856 sqft Built 2005
Raw Value $732,169
Adjusted Value $872,979

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

15801 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,301 sqft Built 2005
Raw Value $642,802
Adjusted Value $627,352

Adjusted -$15,450 for 44 sqft less living space. Net adjustment: -$15,450.

15212 FERNHILL DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 2,273 sqft Built 2006
Raw Value $587,973
Adjusted Value $580,962

Adjusted -$5,618 for 16 sqft less living space and -$1,393 for being older. Net adjustment: -$7,011.

The Neighborhood

This home is valued 15.7% 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

above average
635 Properties
$708,305 Median Value
-3.8% YoY Change
1% Have Pool
100% Have Garage
This Home
$819,466
Median
$708,305

This home is +15.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,990 across all districts. With a homestead exemption claimed, that drops to $13,730 — saving $2,260 per year. That's $1,144 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%$7,319
AustinCity0.5240%$4,294
Williamson CountyCounty0.3694%$3,027
Austin Community Collegespecial0.1034%$847
Williamson County FM/RdCounty0.0443%$363
Upper Brushy Creek WCIDWater0.0170%$139
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$15,990

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $627,352 would pay approximately $3,916 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