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3644 ROSALINA LOOP, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,989 sqftBuilt 2009

Property at a Glance

This home is estimated between $309,781 and $547,475, with a best estimate of $398,392. 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

$309,781 $547,475
Best Estimate
$398,392
WCAD Value
$368,628
Medium Confidence

Based on 5 comparable properties(4 in the same subdivision)

Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $309,781 and $547,475. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

3 bed 2 bath 1,941 sqft Built 2004
Raw Value $302,811
Adjusted Value $309,781

Adjusted +$9,607 for 48 sqft more living space and -$2,637 for being older. Net adjustment: +$6,970.

3648 ROSALINA LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
4 bed 3 bath 1,758 sqft Built 2009
Raw Value $501,241
Adjusted Value $547,475

Adjusted +$46,234 for 231 sqft more living space. Net adjustment: +$46,234.

3640 ROSALINA LOOP, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 2,022 sqft Built 2010
Raw Value $382,255
Adjusted Value $376,177

Adjusted -$6,605 for 33 sqft less living space and +$527 for being newer. Net adjustment: -$6,078.

3668 ROSALINA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,748 sqft Built 2009
Raw Value $350,157
Adjusted Value $398,392

Adjusted +$48,235 for 241 sqft more living space. Net adjustment: +$48,235.

3636 ROSALINA LOOP, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
4 bed 3 bath 1,956 sqft Built 2009
Raw Value $472,978
Adjusted Value $479,583

Adjusted +$6,605 for 33 sqft more living space. Net adjustment: +$6,605.

The Neighborhood

This home is valued 5.0% below the R493607C - PALOMA LAKE SEC 18 median of $387,915. That positions it competitively for buyers comparing within the neighborhood. 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
$368,628
Median
$387,915

This home is -5.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,183 across all districts. With a homestead exemption claimed, that drops to $5,865 — saving $1,318 per year. That's $489 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%$3,292
Paloma Lakes MUD #2MUD0.4215%$1,554
Williamson CountyCounty0.3694%$1,362
Austin Community Collegespecial0.1034%$381
Williamson County ESD #9 - Round RockESD0.0999%$368
Williamson County FM/RdCounty0.0443%$163
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$7,183

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $398,392 would pay approximately $2,487 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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