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

3916 ALABASTER CV, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed4 bath2,726 sqftBuilt 2008

Property at a Glance

This home is estimated between $578,466 and $1,074,271, with a best estimate of $726,349. That places the property below the R147606C - WALSH RANCH median of $933,667, in a neighborhood that declined 4.6% over the past year.

Estimated Value Range

$578,466 $1,074,271
Best Estimate
$726,349
WCAD Value
$1,127,434
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R147606C - WALSH RANCH. The estimated range of $578,466 and $1,074,271 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 3,001 sqft Built 2004
Raw Value $745,869
Adjusted Value $578,466

Adjusted -$111,822 for 275 sqft less living space and -$55,581 for being older. Net adjustment: -$167,403.

4 bed 3 bath 3,250 sqft Built 2007
Raw Value $822,482
Adjusted Value $595,515

Adjusted -$213,072 for 524 sqft less living space and -$13,895 for being older. Net adjustment: -$226,967.

4 bed 3 bath 2,885 sqft Built 2019
Raw Value $638,156
Adjusted Value $726,349

Adjusted -$64,653 for 159 sqft less living space and +$152,846 for being newer. Net adjustment: +$88,193.

4 bed 3 bath 2,007 sqft Built 2011
Raw Value $740,222
Adjusted Value $1,074,271

Adjusted +$292,364 for 719 sqft more living space and +$41,685 for being newer. Net adjustment: +$334,049.

4 bed 3 bath 2,243 sqft Built 2019
Raw Value $476,264
Adjusted Value $825,510

Adjusted +$196,400 for 483 sqft more living space and +$152,846 for being newer. Net adjustment: +$349,246.

The Neighborhood

This home is valued 20.8% above the R147606C - WALSH RANCH median of $933,667. With 239 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 4.6% over the past year.

R147606C - WALSH RANCH

above average
239 Properties
$933,667 Median Value
-4.6% YoY Change
0% Have Pool
100% Have Garage
This Home
$1,127,434
Median
$933,667

This home is +20.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $21,114 across all districts. With a homestead exemption claimed, that drops to $19,656 — saving $1,458 per year. That's $1,638 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%$10,069
Williamson CountyCounty0.3694%$4,165
Walsh Ranch MUDMUD0.3455%$3,895
Austin Community Collegespecial0.1034%$1,166
Williamson County ESD #2 - Sam Bass VFDESD0.1000%$1,127
Williamson County FM/RdCounty0.0443%$500
Upper Brushy Creek WCIDWater0.0170%$192
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8728%$21,114

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $726,349 would pay approximately $4,534 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