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4001 ISABELLA GRACE CT, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,229 sqftBuilt 2017

Property at a Glance

This home is estimated between $556,255 and $629,322, with a best estimate of $568,267. That places the property above the R303513C - Enclave at Highland Horizon median of $555,714, in a neighborhood that declined 8.5% over the past year.

Estimated Value Range

$556,255 $629,322
Best Estimate
$568,267
WCAD Value
$593,803
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 $556,255 and $629,322. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

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 $563,341

Adjusted -$30,427 for 73 sqft less living space and +$39,111 for being newer. Net adjustment: +$8,684.

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 $568,267

Adjusted -$38,347 for 92 sqft less living space and +$19,556 for being newer. Net adjustment: -$18,791.

4004 ISABELLA GRACE CT, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,224 sqft Built 2016
Raw Value $607,682
Adjusted Value $629,322

Adjusted +$2,084 for 5 sqft more living space and +$19,556 for being newer. Net adjustment: +$21,640.

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 $575,600

Adjusted -$47,933 for 115 sqft less living space and +$39,111 for being newer. Net adjustment: -$8,822.

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 $556,255

Adjusted -$49,184 for 118 sqft less living space and +$19,556 for being newer. Net adjustment: -$29,628.

The Neighborhood

This home is valued 6.9% 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
$593,803
Median
$555,714

This home is +6.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,900 across all districts. With a homestead exemption claimed, that drops to $10,540 — saving $1,360 per year. That's $878 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%$5,303
Brushy Creek MUDMUD0.3868%$2,297
Williamson CountyCounty0.3694%$2,194
Austin Community Collegespecial0.1034%$614
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$594
Brushy Creek MUD Defined AreaMUD0.0900%$534
Williamson County FM/RdCounty0.0443%$263
Upper Brushy Creek WCIDWater0.0170%$101
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$11,900

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $568,267 would pay approximately $3,547 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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