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108 BINNACLE DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,197 sqftBuilt 2015

Property at a Glance

This home is estimated between $653,269 and $1,048,140, with a best estimate of $833,851. 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

$653,269 $1,048,140
Best Estimate
$833,851
WCAD Value
$917,307
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R302609C - HIGHLAND HORIZON. The estimated range of $653,269 and $1,048,140 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $661,368

Adjusted +$86,920 for 281 sqft more living space and +$12,437 for being newer. Net adjustment: +$99,357.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $653,269

Adjusted +$86,920 for 281 sqft more living space and -$12,437 for being older. Net adjustment: +$74,483.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $997,340

Adjusted -$6,805 for 22 sqft less living space and +$99,496 for being newer. Net adjustment: +$92,691.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $1,048,140

Adjusted +$13,301 for 43 sqft more living space and +$174,117 for being newer. Net adjustment: +$187,418.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $833,851

Adjusted +$119,399 for 386 sqft more living space and +$12,437 for being newer. Net adjustment: +$131,836.

The Neighborhood

This home is valued 17.4% 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
$917,307
Median
$781,434

This home is +17.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $18,384 across all districts. With a homestead exemption claimed, that drops to $16,964 — saving $1,420 per year. That's $1,414 per month a buyer should budget. The assessed value increased +6.7% vs the subdivision average of +2.3%. This above-average increase gives a protest opportunity score of 42 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$8,192
Brushy Creek MUDMUD0.3868%$3,548
Williamson CountyCounty0.3694%$3,389
Austin Community Collegespecial0.1034%$948
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$917
Brushy Creek MUD Defined AreaMUD0.0900%$826
Williamson County FM/RdCounty0.0443%$407
Upper Brushy Creek WCIDWater0.0170%$156
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$18,384
42 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $833,851 would pay approximately $5,205 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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