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

7804 TOPAWA CV, AUSTIN, TX 78729

AUSTIN, 78729 — williamson County

4 bed2 bath1,193 sqftBuilt 1985

Property at a Glance

This home is estimated between $442,994 and $510,306, with a best estimate of $478,093. That places the property above the R371X - Round Rock West Below 45 - Duplex median of $419,343, in a neighborhood that declined 8.8% over the past year.

Estimated Value Range

$442,994 $510,306
Best Estimate
$478,093
WCAD Value
$504,957
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R371X - Round Rock West Below 45 - Duplex. The estimated range of $442,994 and $510,306 should be treated as a rough guide.

Comparable Properties (5)

7804 JENNER CV, AUSTIN, TX 78729
0.00 mi 100% similar
4 bed 2 bath 1,156 sqft Built 1992
Raw Value $499,230
Adjusted Value $478,093

Adjusted +$7,796 for 37 sqft more living space and -$28,933 for being older. Net adjustment: -$21,137.

8008 PETACA CV, AUSTIN, TX 78729
0.47 mi 100% similar
4 bed 2 bath 1,272 sqft Built 1988
Raw Value $472,040
Adjusted Value $442,994

Adjusted -$16,646 for 79 sqft less living space and -$12,400 for being older. Net adjustment: -$29,046.

8013 PETACA CV, AUSTIN, TX 78729
0.47 mi 100% similar
4 bed 2 bath 1,128 sqft Built 1985
Raw Value $496,610
Adjusted Value $510,306

Adjusted +$13,696 for 65 sqft more living space. Net adjustment: +$13,696.

8012 PETACA CV, AUSTIN, TX 78729
0.47 mi 100% similar
4 bed 1,202 sqft Built 1986
Raw Value $476,096
Adjusted Value $470,067

Adjusted -$1,896 for 9 sqft less living space and -$4,133 for being older. Net adjustment: -$6,029.

4 bed 3 bath 1,220 sqft Built 1989
Raw Value $523,815
Adjusted Value $501,593

Adjusted -$5,689 for 27 sqft less living space and -$16,533 for being older. Net adjustment: -$22,222.

The Neighborhood

This home is valued 20.4% above the R371X - Round Rock West Below 45 - Duplex median of $419,343. With 462 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.8% over the past year.

R371X - Round Rock West Below 45 - Duplex

above average
462 Properties
$419,343 Median Value
-8.8% YoY Change
0% Have Pool
94% Have Garage
This Home
$504,957
Median
$419,343

This home is +20.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,853 across all districts. With a homestead exemption claimed, that drops to $7,980 — saving $1,873 per year. That's $665 per month a buyer should budget. The assessed value increased +4.3% vs the subdivision average of -8.8%. This above-average increase gives a protest opportunity score of 50 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,510
AustinCity0.5240%$2,646
Williamson CountyCounty0.3694%$1,866
Austin Community Collegespecial0.1034%$522
Williamson County FM/RdCounty0.0443%$224
Upper Brushy Creek WCIDWater0.0170%$86
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$9,853
50 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $478,093 would pay approximately $2,984 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