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4004 ISABELLA GRACE CT, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath1,224 sqftBuilt 2016

Property at a Glance

This home is estimated between $534,615 and $572,163, with a best estimate of $546,627. That places the property below the R303513C - Enclave at Highland Horizon median of $555,714, in a neighborhood that declined 8.5% over the past year.

Estimated Value Range

$534,615 $572,163
Best Estimate
$546,627
WCAD Value
$607,682
High Confidence

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

Based on 5 comparable properties in R303513C - Enclave at Highland Horizon, this home's estimated market value is between $534,615 and $572,163. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

4001 ISABELLA GRACE CT, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,229 sqft Built 2017
Raw Value $593,803
Adjusted Value $572,163

Adjusted -$2,084 for 5 sqft less living space and -$19,556 for being older. Net adjustment: -$21,640.

4000 ISABELLA GRACE CT, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,302 sqft Built 2015
Raw Value $554,657
Adjusted Value $541,702

Adjusted -$32,511 for 78 sqft less living space and +$19,556 for being newer. Net adjustment: -$12,955.

4005 ISABELLA GRACE CT, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,321 sqft Built 2016
Raw Value $587,058
Adjusted Value $546,627

Adjusted -$40,431 for 97 sqft less living space. Net adjustment: -$40,431.

1509 SARAH CHRISTINE LN, AUSTIN, TX 78717
0.49 mi 100% similar Same subdivision
4 bed 2 bath 1,344 sqft Built 2015
Raw Value $584,422
Adjusted Value $553,961

Adjusted -$50,017 for 120 sqft less living space and +$19,556 for being newer. Net adjustment: -$30,461.

1508 SARAH CHRISTINE LN, AUSTIN, TX 78717
0.52 mi 100% similar Same subdivision
4 bed 2 bath 1,347 sqft Built 2016
Raw Value $585,883
Adjusted Value $534,615

Adjusted -$51,268 for 123 sqft less living space. Net adjustment: -$51,268.

The Neighborhood

This home is valued 9.4% above the R303513C - Enclave at Highland Horizon median of $555,714. With 126 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.5% over the past year.

R303513C - Enclave at Highland Horizon

typical
126 Properties
$555,714 Median Value
-8.5% YoY Change
0% Have Pool
100% Have Garage
This Home
$607,682
Median
$555,714

This home is +9.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,179 across all districts. With a homestead exemption claimed, that drops to $10,816 — saving $1,363 per year. That's $901 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%$5,427
Brushy Creek MUDMUD0.3868%$2,351
Williamson CountyCounty0.3694%$2,245
Austin Community Collegespecial0.1034%$628
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$608
Brushy Creek MUD Defined AreaMUD0.0900%$547
Williamson County FM/RdCounty0.0443%$269
Upper Brushy Creek WCIDWater0.0170%$103
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$12,179

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $546,627 would pay approximately $3,412 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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