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425 HIGHLAND HORIZON, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath2,863 sqftBuilt 2009

Property at a Glance

This home is estimated between $710,279 and $1,074,433, with a best estimate of $837,337. 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

$710,279 $1,074,433
Best Estimate
$837,337
WCAD Value
$908,823
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 $710,279 and $1,074,433. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

312 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,916 sqft Built 2009
Raw Value $923,621
Adjusted Value $907,227

Adjusted -$16,394 for 53 sqft less living space. Net adjustment: -$16,394.

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 $837,337

Adjusted -$3,403 for 11 sqft less living space and -$37,311 for being older. Net adjustment: -$40,714.

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 $1,074,433

Adjusted +$243,129 for 786 sqft more living space. Net adjustment: +$243,129.

421 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 3,295 sqft Built 2009
Raw Value $843,907
Adjusted Value $710,279

Adjusted -$133,628 for 432 sqft less living space. Net adjustment: -$133,628.

405 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 3 bath 2,955 sqft Built 2009
Raw Value $821,367
Adjusted Value $792,909

Adjusted -$28,458 for 92 sqft less living space. Net adjustment: -$28,458.

The Neighborhood

This home is valued 16.3% 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

above average
399 Properties
$781,434 Median Value
+2.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$908,823
Median
$781,434

This home is +16.3% above the subdivision median.

Tax Analysis

The estimated annual property tax is $18,214 across all districts. With a homestead exemption claimed, that drops to $16,796 — saving $1,418 per year. That's $1,400 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%$8,117
Brushy Creek MUDMUD0.3868%$3,516
Williamson CountyCounty0.3694%$3,358
Austin Community Collegespecial0.1034%$940
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$909
Brushy Creek MUD Defined AreaMUD0.0900%$818
Williamson County FM/RdCounty0.0443%$403
Upper Brushy Creek WCIDWater0.0170%$154
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$18,214

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $837,337 would pay approximately $5,227 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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