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15521 BELFIN DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath2,301 sqftBuilt 2005

Property at a Glance

This home is estimated between $640,862 and $1,016,087, with a best estimate of $687,566. 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

$640,862 $1,016,087
Best Estimate
$687,566
WCAD Value
$636,157
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 $640,862 and $1,016,087. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

15601 BELFIN DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,925 sqft Built 2005
Raw Value $776,090
Adjusted Value $908,121

Adjusted +$132,031 for 376 sqft more living space. Net adjustment: +$132,031.

15517 BELFIN DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,327 sqft Built 2005
Raw Value $674,070
Adjusted Value $1,016,087

Adjusted +$342,017 for 974 sqft more living space. Net adjustment: +$342,017.

15605 BELFIN DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 3 bath 2,297 sqft Built 2005
Raw Value $686,161
Adjusted Value $687,566

Adjusted +$1,405 for 4 sqft more living space. Net adjustment: +$1,405.

15513 BELFIN DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
3 bed 2 bath 2,301 sqft Built 2005
Raw Value $640,862
Adjusted Value $640,862

This comparable closely matches the subject property's features.

15609 BELFIN DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 3 bath 2,402 sqft Built 2005
Raw Value $704,677
Adjusted Value $669,211

Adjusted -$35,466 for 101 sqft less living space. Net adjustment: -$35,466.

The Neighborhood

This home is valued 10.2% 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
$636,157
Median
$708,305

This home is -10.2% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,413 across all districts. With a homestead exemption claimed, that drops to $10,379 — saving $2,034 per year. That's $865 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%$5,682
AustinCity0.5240%$3,334
Williamson CountyCounty0.3694%$2,350
Austin Community Collegespecial0.1034%$658
Williamson County FM/RdCounty0.0443%$282
Upper Brushy Creek WCIDWater0.0170%$108
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,413

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $687,566 would pay approximately $4,292 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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