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

639 ALLENSCREEK WAY, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

4 bed2 bath1,317 sqftBuilt 2015

Property at a Glance

This home is estimated between $155,711 and $605,023, with a best estimate of $333,866. That places the property below the R631414D - WARNER RANCH median of $436,007, in a neighborhood that declined 3.2% over the past year.

Estimated Value Range

$155,711 $605,023
Best Estimate
$333,866
WCAD Value
$415,873
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R631414D - WARNER RANCH. The estimated range of $155,711 and $605,023 should be treated as a rough guide.

Comparable Properties (5)

620 ALLENSCREEK WAY, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,362 sqft Built 2014
Raw Value $362,115
Adjusted Value $333,866

Adjusted -$10,815 for 45 sqft less living space and -$10,112 for being older and -$7,322 for no garage. Net adjustment: -$28,249.

605 ALLENSCREEK WAY, ROUND ROCK, TX 78664
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,045 sqft Built 2015
Raw Value $415,651
Adjusted Value $473,700

Adjusted +$65,371 for 272 sqft more living space and -$7,322 for no garage. Net adjustment: +$58,049.

4 bed 2 bath 1,310 sqft Built 1991
Raw Value $404,047
Adjusted Value $155,711

Adjusted +$1,682 for 7 sqft more living space and -$242,696 for being older and -$7,322 for no garage. Net adjustment: -$248,336.

4 bed 2 bath 1,626 sqft Built 1999
Raw Value $409,993
Adjusted Value $166,610

Adjusted -$74,264 for 309 sqft less living space and -$161,797 for being older and -$7,322 for no garage. Net adjustment: -$243,383.

4 bed 1,516 sqft Built 1995
Raw Value $862,419
Adjusted Value $605,023

Adjusted -$47,827 for 199 sqft less living space and -$202,247 for being older and -$7,322 for no garage. Net adjustment: -$257,396.

The Neighborhood

This home is valued 4.6% below the R631414D - WARNER RANCH median of $436,007. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 3.2% over the past year.

R631414D - WARNER RANCH

typical
275 Properties
$436,007 Median Value
-3.2% YoY Change
0% Have Pool
97% Have Garage
This Home
$415,873
Median
$436,007

This home is -4.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,483 across all districts. With a homestead exemption claimed, that drops to $6,156 — saving $1,327 per year. That's $513 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%$3,714
Round RockCity0.3720%$1,547
Williamson CountyCounty0.3694%$1,536
Austin Community Collegespecial0.1034%$430
Williamson County FM/RdCounty0.0443%$184
Upper Brushy Creek WCIDWater0.0170%$71
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$7,483

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $333,866 would pay approximately $2,084 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 4/19/2026.

View full property details