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

3549 GUADALAJARA ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,231 sqftBuilt 2014

Property at a Glance

This home is estimated between $397,690 and $566,868, with a best estimate of $429,565. 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

$397,690 $566,868
Best Estimate
$429,565
WCAD Value
$398,286
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 $397,690 and $566,868 should be treated as a rough guide.

Comparable Properties (5)

3 bed 1,828 sqft Built 2015
Raw Value $348,379
Adjusted Value $429,565

Adjusted +$80,659 for 403 sqft more living space and +$527 for being newer. Net adjustment: +$81,186.

4 bed 2 bath 1,739 sqft Built 2014
Raw Value $407,607
Adjusted Value $506,079

Adjusted +$98,472 for 492 sqft more living space. Net adjustment: +$98,472.

3 bed 2 bath 2,206 sqft Built 2014
Raw Value $561,864
Adjusted Value $566,868

Adjusted +$5,004 for 25 sqft more living space. Net adjustment: +$5,004.

3 bed 2 bath 2,227 sqft Built 2015
Raw Value $396,362
Adjusted Value $397,690

Adjusted +$801 for 4 sqft more living space and +$527 for being newer. Net adjustment: +$1,328.

3 bed 2 bath 2,194 sqft Built 2014
Raw Value $398,268
Adjusted Value $405,673

Adjusted +$7,405 for 37 sqft more living space. Net adjustment: +$7,405.

The Neighborhood

This home is valued 2.7% 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
$398,286
Median
$387,915

This home is +2.7% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,761 across all districts. With a homestead exemption claimed, that drops to $6,437 — saving $1,324 per year. That's $536 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%$3,557
Paloma Lakes MUD #2MUD0.4215%$1,679
Williamson CountyCounty0.3694%$1,471
Austin Community Collegespecial0.1034%$412
Williamson County ESD #9 - Round RockESD0.0999%$398
Williamson County FM/RdCounty0.0443%$177
Upper Brushy Creek WCIDWater0.0170%$68
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$7,761

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $429,565 would pay approximately $2,681 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