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

8513 PORTAGE CV, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,250 sqftBuilt 1986

Property at a Glance

This home is estimated between $292,466 and $529,125, with a best estimate of $391,840. That places the property below the R230592E - WOODS / MEADOWS OF BRUSHY CREEK median of $534,481, in a neighborhood that declined 2.4% over the past year.

Estimated Value Range

$292,466 $529,125
Best Estimate
$391,840
WCAD Value
$521,680
High Confidence

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

Based on 5 comparable properties in R230592E - WOODS / MEADOWS OF BRUSHY CREEK, this home's estimated market value is between $292,466 and $529,125. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

8510 POTOSI CV, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,625 sqft Built 1986
Raw Value $499,487
Adjusted Value $391,840

Adjusted -$129,063 for 375 sqft less living space and +$21,416 for having a garage. Net adjustment: -$107,647.

8516 POTOSI CV, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,680 sqft Built 1986
Raw Value $440,458
Adjusted Value $292,466

Adjusted -$147,992 for 430 sqft less living space. Net adjustment: -$147,992.

8518 POTOSI CV, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,466 sqft Built 1986
Raw Value $534,210
Adjusted Value $459,870

Adjusted -$74,340 for 216 sqft less living space. Net adjustment: -$74,340.

8517 POTOSI CV, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,899 sqft Built 1987
Raw Value $568,859
Adjusted Value $335,253

Adjusted -$223,364 for 649 sqft less living space and -$10,242 for being older. Net adjustment: -$233,606.

8513 POTOSI CV, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,185 sqft Built 1986
Raw Value $506,754
Adjusted Value $529,125

Adjusted +$22,371 for 65 sqft more living space. Net adjustment: +$22,371.

The Neighborhood

This home is valued 2.4% below the R230592E - WOODS / MEADOWS OF BRUSHY CREEK median of $534,481. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 2.4% over the past year.

R230592E - WOODS / MEADOWS OF BRUSHY CREEK

typical
1,552 Properties
$534,481 Median Value
-2.4% YoY Change
2% Have Pool
95% Have Garage
This Home
$521,680
Median
$534,481

This home is -2.4% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,986 across all districts. With a homestead exemption claimed, that drops to $8,639 — saving $1,347 per year. That's $720 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,659
Brushy Creek MUDMUD0.3868%$2,018
Williamson CountyCounty0.3694%$1,927
Austin Community Collegespecial0.1034%$539
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$522
Williamson County FM/RdCounty0.0443%$231
Upper Brushy Creek WCIDWater0.0170%$89
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$9,986

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $391,840 would pay approximately $2,446 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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