Beta Williamson County, TX only — data and coverage are limited during early access.

113 GENNAKER DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,040 sqftBuilt 2016

Property at a Glance

This home is estimated between $617,142 and $1,012,013, with a best estimate of $797,724. 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

$617,142 $1,012,013
Best Estimate
$797,724
WCAD Value
$738,088
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 $617,142 and $1,012,013 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 $625,241

Adjusted +$38,356 for 124 sqft more living space and +$24,874 for being newer. Net adjustment: +$63,230.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $617,142

Adjusted +$38,356 for 124 sqft more living space. Net adjustment: +$38,356.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $797,724

Adjusted +$70,835 for 229 sqft more living space and +$24,874 for being newer. Net adjustment: +$95,709.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $961,213

Adjusted -$55,369 for 179 sqft less living space and +$111,933 for being newer. Net adjustment: +$56,564.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $1,012,013

Adjusted -$35,263 for 114 sqft less living space and +$186,554 for being newer. Net adjustment: +$151,291.

The Neighborhood

This home is valued 5.5% 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

typical
399 Properties
$781,434 Median Value
+2.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$738,088
Median
$781,434

This home is -5.5% below the subdivision median.

Tax Analysis

The estimated annual property tax is $14,792 across all districts. With a homestead exemption claimed, that drops to $13,405 — saving $1,387 per year. That's $1,117 per month a buyer should budget. The assessed value increased +5.5% vs the subdivision average of +2.3%. This above-average increase gives a protest opportunity score of 31 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$6,592
Brushy Creek MUDMUD0.3868%$2,855
Williamson CountyCounty0.3694%$2,727
Austin Community Collegespecial0.1034%$763
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$738
Brushy Creek MUD Defined AreaMUD0.0900%$664
Williamson County FM/RdCounty0.0443%$327
Upper Brushy Creek WCIDWater0.0170%$125
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$14,792
31 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $797,724 would pay approximately $4,979 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.

View full property details