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

3504 ROSALINA LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,937 sqftBuilt 2010

Property at a Glance

This home is estimated between $368,654 and $722,417, with a best estimate of $662,696. 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

$368,654 $722,417
Best Estimate
$662,696
WCAD Value
$469,151
Low Confidence

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

There are 5 comparable properties within range, but few are in R493607C - PALOMA LAKE SEC 18. The estimated range of $368,654 and $722,417 should be treated as a rough guide.

Comparable Properties (5)

4 bed 3 bath 1,984 sqft Built 2013
Raw Value $730,242
Adjusted Value $722,417

Adjusted -$9,407 for 47 sqft less living space and +$1,582 for being newer. Net adjustment: -$7,825.

4 bed 3 bath 1,977 sqft Built 2013
Raw Value $689,730
Adjusted Value $683,306

Adjusted -$8,006 for 40 sqft less living space and +$1,582 for being newer. Net adjustment: -$6,424.

4 bed 3 bath 1,836 sqft Built 2013
Raw Value $640,899
Adjusted Value $662,696

Adjusted +$20,215 for 101 sqft more living space and +$1,582 for being newer. Net adjustment: +$21,797.

3716 ROSALINA LOOP, ROUND ROCK, TX 78665
0.00 mi 91% similar Same subdivision
3 bed 2 bath 1,950 sqft Built 2009
Raw Value $371,783
Adjusted Value $368,654

Adjusted -$2,602 for 13 sqft less living space and -$527 for being older. Net adjustment: -$3,129.

3647 ROSALINA LOOP, ROUND ROCK, TX 78665
0.00 mi 87% similar Same subdivision
3 bed 2 bath 1,740 sqft Built 2009
Raw Value $356,515
Adjusted Value $395,417

Adjusted +$39,429 for 197 sqft more living space and -$527 for being older. Net adjustment: +$38,902.

The Neighborhood

This home is valued 20.9% 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
$469,151
Median
$387,915

This home is +20.9% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,142 across all districts. With a homestead exemption claimed, that drops to $7,805 — saving $1,337 per year. That's $650 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%$4,190
Paloma Lakes MUD #2MUD0.4215%$1,977
Williamson CountyCounty0.3694%$1,733
Austin Community Collegespecial0.1034%$485
Williamson County ESD #9 - Round RockESD0.0999%$469
Williamson County FM/RdCounty0.0443%$208
Upper Brushy Creek WCIDWater0.0170%$80
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$9,142
48 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $662,696 would pay approximately $4,137 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