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

8413 CAHILL DR, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,923 sqftBuilt 2000

Property at a Glance

This home is estimated between $353,467 and $649,629, with a best estimate of $518,616. 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

$353,467 $649,629
Best Estimate
$518,616
WCAD Value
$532,565
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 $353,467 and $649,629. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8409 CAHILL DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,923 sqft Built 2001
Raw Value $521,314
Adjusted Value $518,616

Adjusted -$2,698 for being older. Net adjustment: -$2,698.

8417 CAHILL DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,597 sqft Built 1999
Raw Value $459,992
Adjusted Value $583,169

Adjusted +$120,479 for 326 sqft more living space and +$2,698 for being newer. Net adjustment: +$123,177.

8405 CAHILL DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,987 sqft Built 1999
Raw Value $517,474
Adjusted Value $496,520

Adjusted -$23,652 for 64 sqft less living space and +$2,698 for being newer. Net adjustment: -$20,954.

8421 CAHILL DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
4 bed 2 bath 2,297 sqft Built 1997
Raw Value $483,593
Adjusted Value $353,467

Adjusted -$138,219 for 374 sqft less living space and +$8,093 for being newer. Net adjustment: -$130,126.

8416 CAHILL DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,701 sqft Built 1998
Raw Value $562,190
Adjusted Value $649,629

Adjusted +$82,044 for 222 sqft more living space and +$5,395 for being newer. Net adjustment: +$87,439.

The Neighborhood

This home is valued 8.9% 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
$532,565
Median
$488,824

This home is +8.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,392 across all districts. With a homestead exemption claimed, that drops to $8,485 — saving $1,907 per year. That's $707 per month a buyer should budget. The assessed value increased +5.9% vs the subdivision average of -2.2%. This above-average increase gives a protest opportunity score of 56 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,756
AustinCity0.5240%$2,791
Williamson CountyCounty0.3694%$1,968
Austin Community Collegespecial0.1034%$551
Williamson County FM/RdCounty0.0443%$236
Upper Brushy Creek WCIDWater0.0170%$91
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$10,392
56 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $518,616 would pay approximately $3,237 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