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148 GENNAKER DR, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath2,003 sqftBuilt 2015

Property at a Glance

This home is estimated between $593,260 and $988,131, with a best estimate of $773,842. 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

$593,260 $988,131
Best Estimate
$773,842
WCAD Value
$791,114
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 $593,260 and $988,131 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 $601,359

Adjusted +$26,911 for 87 sqft more living space and +$12,437 for being newer. Net adjustment: +$39,348.

4 bed 3 bath 1,916 sqft Built 2016
Raw Value $578,786
Adjusted Value $593,260

Adjusted +$26,911 for 87 sqft more living space and -$12,437 for being older. Net adjustment: +$14,474.

4 bed 3 bath 1,811 sqft Built 2014
Raw Value $702,015
Adjusted Value $773,842

Adjusted +$59,390 for 192 sqft more living space and +$12,437 for being newer. Net adjustment: +$71,827.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $937,331

Adjusted -$66,814 for 216 sqft less living space and +$99,496 for being newer. Net adjustment: +$32,682.

4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $988,131

Adjusted -$46,708 for 151 sqft less living space and +$174,117 for being newer. Net adjustment: +$127,409.

The Neighborhood

This home is valued 1.2% 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

typical
399 Properties
$781,434 Median Value
+2.3% YoY Change
0% Have Pool
100% Have Garage
This Home
$791,114
Median
$781,434

This home is +1.2% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,855 across all districts. With a homestead exemption claimed, that drops to $14,458 — saving $1,397 per year. That's $1,205 per month a buyer should budget. The assessed value increased +9.0% vs the subdivision average of +2.3%. This above-average increase gives a protest opportunity score of 54 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$7,065
Brushy Creek MUDMUD0.3868%$3,060
Williamson CountyCounty0.3694%$2,923
Austin Community Collegespecial0.1034%$818
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$791
Brushy Creek MUD Defined AreaMUD0.0900%$712
Williamson County FM/RdCounty0.0443%$351
Upper Brushy Creek WCIDWater0.0170%$134
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.0041%$15,855
54 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $773,842 would pay approximately $4,830 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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