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

155 GLENN DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

3 bed2 bath1,844 sqftBuilt 2018

Property at a Glance

This home is estimated between $394,316 and $648,041, with a best estimate of $623,699. That places the property above the R631414D - WARNER RANCH median of $436,007, in a neighborhood that declined 3.2% over the past year.

Estimated Value Range

$394,316 $648,041
Best Estimate
$623,699
WCAD Value
$474,157
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 $394,316 and $648,041 should be treated as a rough guide.

Comparable Properties (5)

159 GLENN DR, ROUND ROCK, TX 78664
0.00 mi 96% similar Same subdivision
3 bed 2 bath 2,055 sqft Built 2018
Raw Value $445,027
Adjusted Value $394,316

Adjusted -$50,711 for 211 sqft less living space. Net adjustment: -$50,711.

151 GLENN DR, ROUND ROCK, TX 78664
0.00 mi 89% similar Same subdivision
4 bed 3 bath 1,079 sqft Built 2017
Raw Value $474,297
Adjusted Value $648,041

Adjusted +$183,856 for 765 sqft more living space and -$10,112 for being older. Net adjustment: +$173,744.

3 bed 2 bath 779 sqft Built 2020
Raw Value $347,517
Adjusted Value $623,699

Adjusted +$255,957 for 1,065 sqft more living space and +$20,225 for being newer. Net adjustment: +$276,182.

3 bed 2 bath 812 sqft Built 2020
Raw Value $365,704
Adjusted Value $633,955

Adjusted +$248,026 for 1,032 sqft more living space and +$20,225 for being newer. Net adjustment: +$268,251.

3 bed 2 bath 779 sqft Built 2020
Raw Value $347,517
Adjusted Value $623,699

Adjusted +$255,957 for 1,065 sqft more living space and +$20,225 for being newer. Net adjustment: +$276,182.

The Neighborhood

This home is valued 8.7% above the R631414D - WARNER RANCH median of $436,007. With 275 homes in the subdivision, the property sits in the upper tier. 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
$474,157
Median
$436,007

This home is +8.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $8,531 across all districts. With a homestead exemption claimed, that drops to $7,193 — saving $1,338 per year. That's $599 per month a buyer should budget. The assessed value increased +3.8% vs the subdivision average of -3.2%. This above-average increase gives a protest opportunity score of 35 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,235
Round RockCity0.3720%$1,764
Williamson CountyCounty0.3694%$1,752
Austin Community Collegespecial0.1034%$490
Williamson County FM/RdCounty0.0443%$210
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$8,531
35 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $623,699 would pay approximately $3,893 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