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100 LONGITUDE TRL, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

4 bed3 bath2,979 sqftBuilt 2014

Property at a Glance

This home is estimated between $791,044 and $976,220, with a best estimate of $881,578. 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

$791,044 $976,220
Best Estimate
$881,578
WCAD Value
$964,496
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 $791,044 and $976,220. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

108 LONGITUDE TRL, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,825 sqft Built 2010
Raw Value $878,836
Adjusted Value $976,220

Adjusted +$47,636 for 154 sqft more living space and +$49,748 for being newer. Net adjustment: +$97,384.

100 STARBOARD CT, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,989 sqft Built 2013
Raw Value $781,700
Adjusted Value $791,044

Adjusted -$3,093 for 10 sqft less living space and +$12,437 for being newer. Net adjustment: +$9,344.

109 AZIMUTH DR, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,679 sqft Built 2009
Raw Value $691,479
Adjusted Value $846,461

Adjusted +$92,797 for 300 sqft more living space and +$62,185 for being newer. Net adjustment: +$154,982.

108 AZIMUTH DR, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,817 sqft Built 2009
Raw Value $769,282
Adjusted Value $881,578

Adjusted +$50,111 for 162 sqft more living space and +$62,185 for being newer. Net adjustment: +$112,296.

108 SOUTHERN CROSS DR, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
4 bed 1,973 sqft Built 2011
Raw Value $625,349
Adjusted Value $973,840

Adjusted +$311,180 for 1,006 sqft more living space and +$37,311 for being newer. Net adjustment: +$348,491.

The Neighborhood

This home is valued 23.4% 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
$964,496
Median
$781,434

This home is +23.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $19,330 across all districts. With a homestead exemption claimed, that drops to $17,901 — saving $1,429 per year. That's $1,492 per month a buyer should budget. The assessed value increased +6.4% vs the subdivision average of +2.3%. This above-average increase gives a protest opportunity score of 41 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$8,614
Brushy Creek MUDMUD0.3868%$3,731
Williamson CountyCounty0.3694%$3,563
Austin Community Collegespecial0.1034%$997
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$964
Brushy Creek MUD Defined AreaMUD0.0900%$868
Williamson County FM/RdCounty0.0443%$428
Upper Brushy Creek WCIDWater0.0170%$164
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$19,330
41 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $881,578 would pay approximately $5,503 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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