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3645 PENELOPE WAY, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,260 sqftBuilt 2015

Property at a Glance

This home is estimated between $421,993 and $532,855, with a best estimate of $454,148. 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

$421,993 $532,855
Best Estimate
$454,148
WCAD Value
$402,409
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 $421,993 and $532,855 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,011 sqft Built 2016
Raw Value $389,010
Adjusted Value $439,374

Adjusted +$49,837 for 249 sqft more living space and +$527 for being newer. Net adjustment: +$50,364.

3 bed 2 bath 2,182 sqft Built 2010
Raw Value $519,881
Adjusted Value $532,855

Adjusted +$15,611 for 78 sqft more living space and -$2,637 for being older. Net adjustment: +$12,974.

3 bed 2 bath 2,376 sqft Built 2015
Raw Value $483,257
Adjusted Value $460,040

Adjusted -$23,217 for 116 sqft less living space. Net adjustment: -$23,217.

3 bed 2 bath 2,174 sqft Built 2015
Raw Value $404,780
Adjusted Value $421,993

Adjusted +$17,213 for 86 sqft more living space. Net adjustment: +$17,213.

3 bed 1,915 sqft Built 2015
Raw Value $385,097
Adjusted Value $454,148

Adjusted +$69,051 for 345 sqft more living space. Net adjustment: +$69,051.

The Neighborhood

This home is valued 3.7% 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

typical
295 Properties
$387,915 Median Value
-9.2% YoY Change
0% Have Pool
100% Have Garage
This Home
$402,409
Median
$387,915

This home is +3.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,842 across all districts. With a homestead exemption claimed, that drops to $6,517 — saving $1,325 per year. That's $543 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%$3,594
Paloma Lakes MUD #2MUD0.4215%$1,696
Williamson CountyCounty0.3694%$1,487
Austin Community Collegespecial0.1034%$416
Williamson County ESD #9 - Round RockESD0.0999%$402
Williamson County FM/RdCounty0.0443%$178
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$7,842

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $454,148 would pay approximately $2,835 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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