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20 LAKE DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath4,039 sqftBuilt 1965

Property at a Glance

This home is estimated between $951,727 and $1,197,947, with a best estimate of $1,087,687. That places the property above the R425589E - Round Rock Glenn median of $878,798, in a neighborhood that appreciated 5.3% over the past year.

Estimated Value Range

$951,727 $1,197,947
Best Estimate
$1,087,687
WCAD Value
$1,007,914
Low Confidence

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

There are 5 comparable properties within range, but none are in R425589E - Round Rock Glenn. The estimated range of $951,727 and $1,197,947 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,282 sqft Built 2000
Raw Value $492,687
Adjusted Value $951,727

Adjusted +$658,227 for 1,757 sqft more living space and -$199,187 for being older. Net adjustment: +$459,040.

3 bed 2 bath 2,369 sqft Built 2004
Raw Value $666,634
Adjusted Value $1,070,317

Adjusted +$625,634 for 1,670 sqft more living space and -$221,951 for being older. Net adjustment: +$403,683.

4 bed 3 bath 2,442 sqft Built 1984
Raw Value $707,791
Adjusted Value $1,197,947

Adjusted +$598,286 for 1,597 sqft more living space and -$108,130 for being older. Net adjustment: +$490,156.

3 bed 2 bath 1,865 sqft Built 1998
Raw Value $461,043
Adjusted Value $1,087,687

Adjusted +$814,448 for 2,174 sqft more living space and -$187,804 for being older. Net adjustment: +$626,644.

3 bed 2 bath 1,796 sqft Built 1999
Raw Value $451,096
Adjusted Value $1,097,899

Adjusted +$840,298 for 2,243 sqft more living space and -$193,495 for being older. Net adjustment: +$646,803.

The Neighborhood

This home is valued 14.7% above the R425589E - Round Rock Glenn median of $878,798. With 17 homes in the subdivision, the property sits in the upper tier. The neighborhood appreciated 5.3% over the past year.

R425589E - Round Rock Glenn

typical
17 Properties
$878,798 Median Value
+5.3% YoY Change
0% Have Pool
41% Have Garage
This Home
$1,007,914
Median
$878,798

This home is +14.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $14,503 across all districts. With a homestead exemption claimed, that drops to $13,078 — saving $1,425 per year. That's $1,090 per month a buyer should budget. The assessed value increased +27.4% vs the subdivision average of +5.3%. This above-average increase gives a protest opportunity score of 100 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$8,482
Williamson CountyCounty0.3694%$3,509
Austin Community Collegespecial0.1034%$982
Williamson County ESD #9 - Round RockESD0.0999%$949
Williamson County FM/RdCounty0.0443%$421
Upper Brushy Creek WCIDWater0.0170%$161
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.5272%$14,503
100 / 100

There may be a strong case to protest this appraisal.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,087,687 would pay approximately $6,789 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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