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

18225 WHITEWATER CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed2 bath2,801 sqftBuilt 1998

Property at a Glance

This home is estimated between $579,451 and $1,041,598, with a best estimate of $887,566. 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

$579,451 $1,041,598
Best Estimate
$887,566
WCAD Value
$632,043
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 $579,451 and $1,041,598. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

18224 WHITEWATER CV, ROUND ROCK, TX 78681
0.02 mi 100% similar Same subdivision
4 bed 2 bath 2,486 sqft Built 1996
Raw Value $502,573
Adjusted Value $609,862

Adjusted +$105,098 for 315 sqft more living space and +$2,191 for being newer. Net adjustment: +$107,289.

18213 WHITEWATER CV, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 2 bath 1,840 sqft Built 1996
Raw Value $567,017
Adjusted Value $889,841

Adjusted +$320,633 for 961 sqft more living space and +$2,191 for being newer. Net adjustment: +$322,824.

18212 WHITEWATER CV, ROUND ROCK, TX 78681
0.04 mi 100% similar Same subdivision
4 bed 2 bath 2,206 sqft Built 1996
Raw Value $686,856
Adjusted Value $887,566

Adjusted +$198,519 for 595 sqft more living space and +$2,191 for being newer. Net adjustment: +$200,710.

18209 WHITEWATER CV, ROUND ROCK, TX 78681
0.06 mi 100% similar Same subdivision
4 bed 2 bath 2,521 sqft Built 1996
Raw Value $483,839
Adjusted Value $579,451

Adjusted +$93,421 for 280 sqft more living space and +$2,191 for being newer. Net adjustment: +$95,612.

18205 WHITEWATER CV, ROUND ROCK, TX 78681
0.07 mi 100% similar Same subdivision
4 bed 2 bath 1,720 sqft Built 1997
Raw Value $679,833
Adjusted Value $1,041,598

Adjusted +$360,670 for 1,081 sqft more living space and +$1,095 for being newer. Net adjustment: +$361,765.

The Neighborhood

This home is valued 20.8% 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
$632,043
Median
$523,036

This home is +20.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $10,791 across all districts. With a homestead exemption claimed, that drops to $9,424 — saving $1,367 per year. That's $785 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%$5,645
Williamson CountyCounty0.3694%$2,335
Fern Bluff MUDMUD0.1800%$1,138
Austin Community Collegespecial0.1034%$654
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$632
Williamson County FM/RdCounty0.0443%$280
Upper Brushy Creek WCIDWater0.0170%$107
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7073%$10,791

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $887,566 would pay approximately $5,540 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