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4100 RISA CT, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath3,694 sqftBuilt 2003

Property at a Glance

This home is estimated between $769,017 and $1,461,398, with a best estimate of $1,250,185. That places the property above the R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5 median of $750,158, in a neighborhood that appreciated 0.3% over the past year.

Estimated Value Range

$769,017 $1,461,398
Best Estimate
$1,250,185
WCAD Value
$940,781
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5. The estimated range of $769,017 and $1,461,398 should be treated as a rough guide.

Comparable Properties (5)

2423 ARBOR DR, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,154 sqft Built 2001
Raw Value $860,722
Adjusted Value $1,424,957

Adjusted +$569,756 for 1,540 sqft more living space and -$5,521 for being older. Net adjustment: +$564,235.

4 bed 2 bath 3,110 sqft Built 2000
Raw Value $572,254
Adjusted Value $780,036

Adjusted +$216,063 for 584 sqft more living space and -$8,281 for being older. Net adjustment: +$207,782.

4 bed 3 bath 2,219 sqft Built 2007
Raw Value $904,649
Adjusted Value $1,461,398

Adjusted +$545,707 for 1,475 sqft more living space and +$11,042 for being newer. Net adjustment: +$556,749.

3 bed 2 bath 3,097 sqft Built 2000
Raw Value $556,425
Adjusted Value $769,017

Adjusted +$220,873 for 597 sqft more living space and -$8,281 for being older. Net adjustment: +$212,592.

4 bed 3 bath 1,916 sqft Built 2014
Raw Value $562,011
Adjusted Value $1,250,185

Adjusted +$657,809 for 1,778 sqft more living space and +$30,365 for being newer. Net adjustment: +$688,174.

The Neighborhood

This home is valued 25.4% above the R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5 median of $750,158. With 1,049 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 0.3% over the past year.

R102606C - SENDERO SPRINGS / BEHREN'S RANCH R5

above average
1,049 Properties
$750,158 Median Value
+0.3% YoY Change
1% Have Pool
99% Have Garage
This Home
$940,781
Median
$750,158

This home is +25.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $15,371 across all districts. With a homestead exemption claimed, that drops to $13,972 — saving $1,399 per year. That's $1,164 per month a buyer should budget. The assessed value increased +5.4% vs the subdivision average of +0.3%. 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%$7,172
Brushy Creek MUDMUD0.3868%$3,106
Williamson CountyCounty0.3694%$2,967
Austin Community Collegespecial0.1034%$830
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$803
Williamson County FM/RdCounty0.0443%$356
Upper Brushy Creek WCIDWater0.0170%$137
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9141%$15,371
41 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,250,185 would pay approximately $7,804 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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