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109 STARBOARD CT, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath2,100 sqftBuilt 2012

Property at a Glance

This home is estimated between $494,274 and $679,450, with a best estimate of $596,610. 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

$494,274 $679,450
Best Estimate
$596,610
WCAD Value
$943,083
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $494,274 and $679,450. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

108 BUOY LN, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,233 sqft Built 2011
Raw Value $576,413
Adjusted Value $547,710

Adjusted -$41,140 for 133 sqft less living space and +$12,437 for being newer. Net adjustment: -$28,703.

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 $679,450

Adjusted -$224,260 for 725 sqft less living space and +$24,874 for being newer. Net adjustment: -$199,386.

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 $494,274

Adjusted -$274,989 for 889 sqft less living space and -$12,437 for being older. Net adjustment: -$287,426.

3 bed 2 bath 2,087 sqft Built 2002
Raw Value $468,220
Adjusted Value $596,610

Adjusted +$4,021 for 13 sqft more living space and +$124,369 for being newer. Net adjustment: +$128,390.

104 MARITIME WAY, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,886 sqft Built 2010
Raw Value $565,462
Adjusted Value $656,531

Adjusted +$66,195 for 214 sqft more living space and +$24,874 for being newer. Net adjustment: +$91,069.

The Neighborhood

This home is valued 20.7% 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
$943,083
Median
$781,434

This home is +20.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $18,900 across all districts. With a homestead exemption claimed, that drops to $17,476 — saving $1,424 per year. That's $1,456 per month a buyer should budget. The assessed value increased +6.8% vs the subdivision average of +2.3%. This above-average increase gives a protest opportunity score of 43 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$8,423
Brushy Creek MUDMUD0.3868%$3,648
Williamson CountyCounty0.3694%$3,484
Austin Community Collegespecial0.1034%$975
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$943
Brushy Creek MUD Defined AreaMUD0.0900%$849
Williamson County FM/RdCounty0.0443%$418
Upper Brushy Creek WCIDWater0.0170%$160
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$18,900
43 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $596,610 would pay approximately $3,724 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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