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

18205 WHITEWATER CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,720 sqftBuilt 1997

Property at a Glance

This home is estimated between $217,684 and $648,450, with a best estimate of $561,512. That places the property above the R292598D - Stone Canyon - Weekley & Newmark median of $523,036, in a neighborhood that declined 5.2% over the past year.

Estimated Value Range

$217,684 $648,450
Best Estimate
$561,512
WCAD Value
$679,833
High Confidence

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

Based on 5 comparable properties in R292598D - Stone Canyon - Weekley & Newmark, this home's estimated market value is between $217,684 and $648,450. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

18209 WHITEWATER CV, ROUND ROCK, TX 78681
0.01 mi 100% similar Same subdivision
4 bed 2 bath 2,521 sqft Built 1996
Raw Value $483,839
Adjusted Value $217,684

Adjusted -$267,250 for 801 sqft less living space and +$1,095 for being newer. Net adjustment: -$266,155.

18213 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,840 sqft Built 1996
Raw Value $567,017
Adjusted Value $528,075

Adjusted -$40,037 for 120 sqft less living space and +$1,095 for being newer. Net adjustment: -$38,942.

18121 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,891 sqft Built 1997
Raw Value $618,565
Adjusted Value $561,512

Adjusted -$57,053 for 171 sqft less living space. Net adjustment: -$57,053.

18208 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,562 sqft Built 1996
Raw Value $566,628
Adjusted Value $620,439

Adjusted +$52,716 for 158 sqft more living space and +$1,095 for being newer. Net adjustment: +$53,811.

18217 WHITEWATER CV, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,593 sqft Built 1996
Raw Value $604,982
Adjusted Value $648,450

Adjusted +$42,373 for 127 sqft more living space and +$1,095 for being newer. Net adjustment: +$43,468.

The Neighborhood

This home is valued 30.0% above the R292598D - Stone Canyon - Weekley & Newmark median of $523,036. With 952 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 5.2% over the past year.

R292598D - Stone Canyon - Weekley & Newmark

above average
952 Properties
$523,036 Median Value
-5.2% YoY Change
1% Have Pool
99% Have Garage
This Home
$679,833
Median
$523,036

This home is +30.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $11,607 across all districts. With a homestead exemption claimed, that drops to $10,231 — saving $1,376 per year. That's $853 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$6,072
Williamson CountyCounty0.3694%$2,512
Fern Bluff MUDMUD0.1800%$1,224
Austin Community Collegespecial0.1034%$703
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$680
Williamson County FM/RdCounty0.0443%$301
Upper Brushy Creek WCIDWater0.0170%$116
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$11,607

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $561,512 would pay approximately $3,505 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