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9229 CASTLE PINES DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,657 sqftBuilt 2006

Property at a Glance

This home is estimated between $377,278 and $772,525, with a best estimate of $643,621. 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

$377,278 $772,525
Best Estimate
$643,621
WCAD Value
$659,981
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 $377,278 and $772,525. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

9301 CASTLE PINES DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,929 sqft Built 2005
Raw Value $737,740
Adjusted Value $643,621

Adjusted -$95,512 for 272 sqft less living space and +$1,393 for being newer. Net adjustment: -$94,119.

9305 CASTLE PINES DR, AUSTIN, TX 78717
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,540 sqft Built 2005
Raw Value $730,048
Adjusted Value $772,525

Adjusted +$41,084 for 117 sqft more living space and +$1,393 for being newer. Net adjustment: +$42,477.

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 $743,830

Adjusted +$103,940 for 296 sqft more living space and +$1,393 for being newer. Net adjustment: +$105,333.

9309 CASTLE PINES DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,988 sqft Built 2005
Raw Value $728,016
Adjusted Value $613,179

Adjusted -$116,230 for 331 sqft less living space and +$1,393 for being newer. Net adjustment: -$114,837.

15809 BELFIN DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,301 sqft Built 2005
Raw Value $602,024
Adjusted Value $377,278

Adjusted -$226,139 for 644 sqft less living space and +$1,393 for being newer. Net adjustment: -$224,746.

The Neighborhood

This home is valued 6.8% 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
$659,981
Median
$708,305

This home is -6.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,878 across all districts. With a homestead exemption claimed, that drops to $10,814 — saving $2,064 per year. That's $901 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%$5,894
AustinCity0.5240%$3,458
Williamson CountyCounty0.3694%$2,438
Austin Community Collegespecial0.1034%$682
Williamson County FM/RdCounty0.0443%$293
Upper Brushy Creek WCIDWater0.0170%$112
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,878

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $643,621 would pay approximately $4,017 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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