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3500 PENELOPE WAY, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,967 sqftBuilt 2010

Property at a Glance

This home is estimated between $344,018 and $566,244, with a best estimate of $398,848. That places the property above the R493607C - PALOMA LAKE SEC 18 median of $387,915, in a neighborhood that declined 9.2% over the past year.

Estimated Value Range

$344,018 $566,244
Best Estimate
$398,848
WCAD Value
$475,896
Low Confidence

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

There are 5 comparable properties within range, but none are in R493607C - PALOMA LAKE SEC 18. The estimated range of $344,018 and $566,244 should be treated as a rough guide.

Comparable Properties (5)

4 bed 1,548 sqft Built 2006
Raw Value $484,492
Adjusted Value $566,244

Adjusted +$83,862 for 419 sqft more living space and -$2,110 for being older. Net adjustment: +$81,752.

3 bed 2 bath 1,922 sqft Built 2006
Raw Value $368,423
Adjusted Value $375,320

Adjusted +$9,007 for 45 sqft more living space and -$2,110 for being older. Net adjustment: +$6,897.

3 bed 2 bath 1,868 sqft Built 2006
Raw Value $381,143
Adjusted Value $398,848

Adjusted +$19,815 for 99 sqft more living space and -$2,110 for being older. Net adjustment: +$17,705.

3 bed 2 bath 1,840 sqft Built 2006
Raw Value $376,707
Adjusted Value $400,016

Adjusted +$25,419 for 127 sqft more living space and -$2,110 for being older. Net adjustment: +$23,309.

3 bed 2 bath 2,125 sqft Built 2006
Raw Value $377,751
Adjusted Value $344,018

Adjusted -$31,623 for 158 sqft less living space and -$2,110 for being older. Net adjustment: -$33,733.

The Neighborhood

This home is valued 22.7% above the R493607C - PALOMA LAKE SEC 18 median of $387,915. With 295 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 9.2% over the past year.

R493607C - PALOMA LAKE SEC 18

above average
295 Properties
$387,915 Median Value
-9.2% YoY Change
0% Have Pool
100% Have Garage
This Home
$475,896
Median
$387,915

This home is +22.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,274 across all districts. With a homestead exemption claimed, that drops to $7,935 — saving $1,339 per year. That's $661 per month a buyer should budget. The assessed value increased +0.3% vs the subdivision average of -9.2%. This above-average increase gives a protest opportunity score of 48 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,250
Paloma Lakes MUD #2MUD0.4215%$2,006
Williamson CountyCounty0.3694%$1,758
Austin Community Collegespecial0.1034%$492
Williamson County ESD #9 - Round RockESD0.0999%$475
Williamson County FM/RdCounty0.0443%$211
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$9,274
48 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $398,848 would pay approximately $2,490 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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