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8509 CAHILL DR, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,929 sqftBuilt 2002

Property at a Glance

This home is estimated between $361,080 and $809,040, with a best estimate of $611,124. That places the property above the R381591E - Hunters' Chase Sec 5 & 7 median of $488,824, in a neighborhood that declined 2.2% over the past year.

Estimated Value Range

$361,080 $809,040
Best Estimate
$611,124
WCAD Value
$524,432
High Confidence

Based on 5 comparable properties(5 in the same subdivision)

Based on 5 comparable properties in R381591E - Hunters' Chase Sec 5 & 7, this home's estimated market value is between $361,080 and $809,040. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8511 CAHILL DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,534 sqft Built 1999
Raw Value $457,051
Adjusted Value $611,124

Adjusted +$145,980 for 395 sqft more living space and +$8,093 for being newer. Net adjustment: +$154,073.

8508 CAHILL DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,609 sqft Built 1998
Raw Value $606,258
Adjusted Value $735,310

Adjusted +$118,262 for 320 sqft more living space and +$10,790 for being newer. Net adjustment: +$129,052.

8541 FOXHOUND TRL, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,499 sqft Built 1996
Raw Value $633,939
Adjusted Value $809,040

Adjusted +$158,915 for 430 sqft more living space and +$16,186 for being newer. Net adjustment: +$175,101.

8421 CAHILL DR, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,297 sqft Built 1997
Raw Value $483,593
Adjusted Value $361,080

Adjusted -$136,001 for 368 sqft less living space and +$13,488 for being newer. Net adjustment: -$122,513.

8537 FOXHOUND TRL, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
3 bed 2 bath 2,024 sqft Built 1995
Raw Value $493,245
Adjusted Value $477,019

Adjusted -$35,109 for 95 sqft less living space and +$18,883 for being newer. Net adjustment: -$16,226.

The Neighborhood

This home is valued 7.3% above the R381591E - Hunters' Chase Sec 5 & 7 median of $488,824. With 762 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 2.2% over the past year.

R381591E - Hunters' Chase Sec 5 & 7

typical
762 Properties
$488,824 Median Value
-2.2% YoY Change
3% Have Pool
100% Have Garage
This Home
$524,432
Median
$488,824

This home is +7.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,233 across all districts. With a homestead exemption claimed, that drops to $8,336 — saving $1,897 per year. That's $695 per month a buyer should budget. The assessed value increased +6.4% vs the subdivision average of -2.2%. This above-average increase gives a protest opportunity score of 58 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,684
AustinCity0.5240%$2,748
Williamson CountyCounty0.3694%$1,937
Austin Community Collegespecial0.1034%$542
Williamson County FM/RdCounty0.0443%$232
Upper Brushy Creek WCIDWater0.0170%$89
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$10,233
58 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $611,124 would pay approximately $3,815 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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