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424 HIGHLAND HORIZON, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath2,124 sqftBuilt 2010

Property at a Glance

This home is estimated between $600,803 and $868,242, with a best estimate of $807,899. That places the property above the R302609C - HIGHLAND HORIZON median of $781,434, in a neighborhood that appreciated 2.3% over the past year.

Estimated Value Range

$600,803 $868,242
Best Estimate
$807,899
WCAD Value
$798,868
High Confidence

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

Based on 5 comparable properties in R302609C - HIGHLAND HORIZON, this home's estimated market value is between $600,803 and $868,242. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

440 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,270 sqft Built 2010
Raw Value $913,403
Adjusted Value $868,242

Adjusted -$45,161 for 146 sqft less living space. Net adjustment: -$45,161.

400 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,874 sqft Built 2012
Raw Value $878,051
Adjusted Value $621,184

Adjusted -$231,993 for 750 sqft less living space and -$24,874 for being older. Net adjustment: -$256,867.

309 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 2 bath 1,589 sqft Built 2010
Raw Value $642,411
Adjusted Value $807,899

Adjusted +$165,488 for 535 sqft more living space. Net adjustment: +$165,488.

204 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,079 sqft Built 2010
Raw Value $586,883
Adjusted Value $600,803

Adjusted +$13,920 for 45 sqft more living space. Net adjustment: +$13,920.

441 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,077 sqft Built 2009
Raw Value $831,304
Adjusted Value $858,279

Adjusted +$14,538 for 47 sqft more living space and +$12,437 for being newer. Net adjustment: +$26,975.

The Neighborhood

This home is valued 2.2% above the R302609C - HIGHLAND HORIZON median of $781,434. With 399 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 2.3% over the past year.

R302609C - HIGHLAND HORIZON

typical
399 Properties
$781,434 Median Value
+2.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$798,868
Median
$781,434

This home is +2.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $16,010 across all districts. With a homestead exemption claimed, that drops to $14,612 — saving $1,398 per year. That's $1,218 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%$7,135
Brushy Creek MUDMUD0.3868%$3,090
Williamson CountyCounty0.3694%$2,951
Austin Community Collegespecial0.1034%$826
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$799
Brushy Creek MUD Defined AreaMUD0.0900%$719
Williamson County FM/RdCounty0.0443%$354
Upper Brushy Creek WCIDWater0.0170%$136
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$16,010

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $807,899 would pay approximately $5,043 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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