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8100 CAHILL DR, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

3 bed2 bath1,620 sqftBuilt 1987

Property at a Glance

This home is estimated between $437,831 and $742,206, with a best estimate of $648,598. 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

$437,831 $742,206
Best Estimate
$648,598
WCAD Value
$482,452
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 $437,831 and $742,206. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8102 CAHILL DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,376 sqft Built 1987
Raw Value $425,949
Adjusted Value $516,124

Adjusted +$90,175 for 244 sqft more living space. Net adjustment: +$90,175.

8018 CAHILL DR, AUSTIN, TX 78729
0.01 mi 100% similar Same subdivision
4 bed 2 bath 1,240 sqft Built 1987
Raw Value $525,525
Adjusted Value $665,961

Adjusted +$140,436 for 380 sqft more living space. Net adjustment: +$140,436.

8104 CAHILL DR, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,136 sqft Built 1987
Raw Value $469,727
Adjusted Value $648,598

Adjusted +$178,871 for 484 sqft more living space. Net adjustment: +$178,871.

8016 CAHILL DR, AUSTIN, TX 78729
0.02 mi 100% similar Same subdivision
4 bed 2 bath 1,227 sqft Built 1987
Raw Value $596,965
Adjusted Value $742,206

Adjusted +$145,241 for 393 sqft more living space. Net adjustment: +$145,241.

8105 CAHILL DR, AUSTIN, TX 78729
0.03 mi 100% similar Same subdivision
3 bed 2 bath 1,557 sqft Built 1986
Raw Value $411,850
Adjusted Value $437,831

Adjusted +$23,283 for 63 sqft more living space and +$2,698 for being newer. Net adjustment: +$25,981.

The Neighborhood

This home is valued 1.3% 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
$482,452
Median
$488,824

This home is -1.3% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,414 across all districts. With a homestead exemption claimed, that drops to $7,569 — saving $1,845 per year. That's $631 per month a buyer should budget. The assessed value increased +4.5% vs the subdivision average of -2.2%. This above-average increase gives a protest opportunity score of 34 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,309
AustinCity0.5240%$2,528
Williamson CountyCounty0.3694%$1,782
Austin Community Collegespecial0.1034%$499
Williamson County FM/RdCounty0.0443%$214
Upper Brushy Creek WCIDWater0.0170%$82
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$9,414
34 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $648,598 would pay approximately $4,049 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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