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309 HIGHLAND HORIZON, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed2 bath1,589 sqftBuilt 2010

Property at a Glance

This home is estimated between $435,314 and $702,753, with a best estimate of $651,244. That places the property below the R302609C - HIGHLAND HORIZON median of $781,434, in a neighborhood that appreciated 2.3% over the past year.

Estimated Value Range

$435,314 $702,753
Best Estimate
$651,244
WCAD Value
$642,411
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 $435,314 and $702,753. 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 $702,753

Adjusted -$210,650 for 681 sqft less living space. Net adjustment: -$210,650.

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 $435,314

Adjusted -$151,569 for 490 sqft less living space. Net adjustment: -$151,569.

209 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,625 sqft Built 2010
Raw Value $653,092
Adjusted Value $641,956

Adjusted -$11,136 for 36 sqft less living space. Net adjustment: -$11,136.

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 $692,791

Adjusted -$150,950 for 488 sqft less living space and +$12,437 for being newer. Net adjustment: -$138,513.

313 HIGHLAND HORIZON, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,595 sqft Built 2010
Raw Value $653,100
Adjusted Value $651,244

Adjusted -$1,856 for 6 sqft less living space. Net adjustment: -$1,856.

The Neighborhood

This home is valued 17.8% below the R302609C - HIGHLAND HORIZON median of $781,434. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 2.3% over the past year.

R302609C - HIGHLAND HORIZON

below average
399 Properties
$781,434 Median Value
+2.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$642,411
Median
$781,434

This home is -17.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $12,875 across all districts. With a homestead exemption claimed, that drops to $11,506 — saving $1,369 per year. That's $959 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%$5,737
Brushy Creek MUDMUD0.3868%$2,485
Williamson CountyCounty0.3694%$2,373
Austin Community Collegespecial0.1034%$664
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$642
Brushy Creek MUD Defined AreaMUD0.0900%$578
Williamson County FM/RdCounty0.0443%$285
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$12,875

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $651,244 would pay approximately $4,065 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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