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

9529 CASTLE PINES DR, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath1,178 sqftBuilt 2005

Property at a Glance

This home is estimated between $301,621 and $654,551, with a best estimate of $571,884. 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

$301,621 $654,551
Best Estimate
$571,884
WCAD Value
$616,795
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 $301,621 and $654,551. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

9533 CASTLE PINES DR, AUSTIN, TX 78717
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,598 sqft Built 2005
Raw Value $719,366
Adjusted Value $571,884

Adjusted -$147,482 for 420 sqft less living space. Net adjustment: -$147,482.

9605 CASTLE PINES DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,415 sqft Built 2006
Raw Value $653,411
Adjusted Value $568,796

Adjusted -$83,222 for 237 sqft less living space and -$1,393 for being older. Net adjustment: -$84,615.

9524 CASTLE PINES DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,697 sqft Built 2004
Raw Value $482,473
Adjusted Value $301,621

Adjusted -$182,245 for 519 sqft less living space and +$1,393 for being newer. Net adjustment: -$180,852.

9500 PASATIEMPO DR, AUSTIN, TX 78717
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,551 sqft Built 2005
Raw Value $729,806
Adjusted Value $598,828

Adjusted -$130,978 for 373 sqft less living space. Net adjustment: -$130,978.

9516 CASTLE PINES DR, AUSTIN, TX 78717
0.04 mi 100% similar Same subdivision
3 bed 2 bath 1,102 sqft Built 2006
Raw Value $629,257
Adjusted Value $654,551

Adjusted +$26,687 for 76 sqft more living space and -$1,393 for being older. Net adjustment: +$25,294.

The Neighborhood

This home is valued 12.9% 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
$616,795
Median
$708,305

This home is -12.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,035 across all districts. With a homestead exemption claimed, that drops to $10,025 — saving $2,010 per year. That's $835 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%$5,509
AustinCity0.5240%$3,232
Williamson CountyCounty0.3694%$2,279
Austin Community Collegespecial0.1034%$638
Williamson County FM/RdCounty0.0443%$273
Upper Brushy Creek WCIDWater0.0170%$105
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$12,035

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $571,884 would pay approximately $3,570 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