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8511 CAHILL DR, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,534 sqftBuilt 1999

Property at a Glance

This home is estimated between $370,359 and $677,257, with a best estimate of $598,882. 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

$370,359 $677,257
Best Estimate
$598,882
WCAD Value
$457,051
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 $370,359 and $677,257. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8509 CAHILL DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,929 sqft Built 2002
Raw Value $524,432
Adjusted Value $370,359

Adjusted -$145,980 for 395 sqft less living space and -$8,093 for being older. Net adjustment: -$154,073.

8513 CAHILL DR, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,236 sqft Built 2000
Raw Value $569,824
Adjusted Value $677,257

Adjusted +$110,131 for 298 sqft more living space and -$2,698 for being older. Net adjustment: +$107,433.

8505 CAHILL DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,252 sqft Built 1996
Raw Value $486,571
Adjusted Value $598,882

Adjusted +$104,218 for 282 sqft more living space and +$8,093 for being newer. Net adjustment: +$112,311.

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 $654,967

Adjusted +$12,935 for 35 sqft more living space and +$8,093 for being newer. Net adjustment: +$21,028.

8508 CAHILL DR, AUSTIN, TX 78729
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,609 sqft Built 1998
Raw Value $606,258
Adjusted Value $581,238

Adjusted -$27,718 for 75 sqft less living space and +$2,698 for being newer. Net adjustment: -$25,020.

The Neighborhood

This home is valued 6.5% below the R381591E - Hunters' Chase Sec 5 & 7 median of $488,824. That positions it competitively for buyers comparing within the neighborhood. 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
$457,051
Median
$488,824

This home is -6.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,918 across all districts. With a homestead exemption claimed, that drops to $7,105 — saving $1,813 per year. That's $592 per month a buyer should budget. The assessed value increased +6.9% vs the subdivision average of -2.2%. This above-average increase gives a protest opportunity score of 61 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,082
AustinCity0.5240%$2,395
Williamson CountyCounty0.3694%$1,689
Austin Community Collegespecial0.1034%$473
Williamson County FM/RdCounty0.0443%$203
Upper Brushy Creek WCIDWater0.0170%$78
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$8,918
61 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $598,882 would pay approximately $3,738 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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