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18120 WHITEWATER CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath1,346 sqftBuilt 1998

Property at a Glance

This home is estimated between $237,750 and $594,363, with a best estimate of $475,543. That places the property below the R292598D - Stone Canyon - Weekley & Newmark median of $523,036, in a neighborhood that declined 5.2% over the past year.

Estimated Value Range

$237,750 $594,363
Best Estimate
$475,543
WCAD Value
$575,322
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 $237,750 and $594,363. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

18112 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,926 sqft Built 1996
Raw Value $429,073
Adjusted Value $237,750

Adjusted -$193,514 for 580 sqft less living space and +$2,191 for being newer. Net adjustment: -$191,323.

18204 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,351 sqft Built 1997
Raw Value $594,936
Adjusted Value $594,363

Adjusted -$1,668 for 5 sqft less living space and +$1,095 for being newer. Net adjustment: -$573.

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 $437,823

Adjusted -$181,837 for 545 sqft less living space and +$1,095 for being newer. Net adjustment: -$180,742.

18113 WHITEWATER CV, ROUND ROCK, TX 78681
0.03 mi 100% similar Same subdivision
4 bed 2 bath 1,850 sqft Built 1999
Raw Value $644,795
Adjusted Value $475,543

Adjusted -$168,157 for 504 sqft less living space and -$1,095 for being older. Net adjustment: -$169,252.

18208 WHITEWATER CV, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,562 sqft Built 1996
Raw Value $566,628
Adjusted Value $496,752

Adjusted -$72,067 for 216 sqft less living space and +$2,191 for being newer. Net adjustment: -$69,876.

The Neighborhood

This home is valued 10.0% 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

typical
952 Properties
$523,036 Median Value
-5.2% YoY Change
1% Have Pool
99% Have Garage
This Home
$575,322
Median
$523,036

This home is +10.0% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,822 across all districts. With a homestead exemption claimed, that drops to $8,466 — saving $1,356 per year. That's $706 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%$5,138
Williamson CountyCounty0.3694%$2,126
Fern Bluff MUDMUD0.1800%$1,036
Austin Community Collegespecial0.1034%$595
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$575
Williamson County FM/RdCounty0.0443%$255
Upper Brushy Creek WCIDWater0.0170%$98
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$9,822

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $475,543 would pay approximately $2,968 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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