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3509 GUADALAJARA ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath2,144 sqftBuilt 2013

Property at a Glance

This home is estimated between $388,788 and $549,982, with a best estimate of $425,953. 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

$388,788 $549,982
Best Estimate
$425,953
WCAD Value
$391,186
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 $388,788 and $549,982 should be treated as a rough guide.

Comparable Properties (5)

3 bed 1,828 sqft Built 2015
Raw Value $348,379
Adjusted Value $412,680

Adjusted +$63,246 for 316 sqft more living space and +$1,055 for being newer. Net adjustment: +$64,301.

4 bed 2 bath 1,739 sqft Built 2014
Raw Value $407,607
Adjusted Value $489,193

Adjusted +$81,059 for 405 sqft more living space and +$527 for being newer. Net adjustment: +$81,586.

3 bed 2 bath 2,194 sqft Built 2014
Raw Value $398,268
Adjusted Value $388,788

Adjusted -$10,007 for 50 sqft less living space and +$527 for being newer. Net adjustment: -$9,480.

3 bed 2 bath 2,206 sqft Built 2014
Raw Value $561,864
Adjusted Value $549,982

Adjusted -$12,409 for 62 sqft less living space and +$527 for being newer. Net adjustment: -$11,882.

3 bed 2 bath 2,173 sqft Built 2017
Raw Value $429,647
Adjusted Value $425,953

Adjusted -$5,804 for 29 sqft less living space and +$2,110 for being newer. Net adjustment: -$3,694.

The Neighborhood

This home is in line with the R493607C - PALOMA LAKE SEC 18 median of $387,915. 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
$391,186
Median
$387,915

This home is +0.8% above the subdivision median.

Tax Analysis

The estimated annual property tax is $7,623 across all districts. With a homestead exemption claimed, that drops to $6,300 — saving $1,323 per year. That's $525 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%$3,494
Paloma Lakes MUD #2MUD0.4215%$1,649
Williamson CountyCounty0.3694%$1,445
Austin Community Collegespecial0.1034%$404
Williamson County ESD #9 - Round RockESD0.0999%$391
Williamson County FM/RdCounty0.0443%$173
Upper Brushy Creek WCIDWater0.0170%$67
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$7,623

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $425,953 would pay approximately $2,659 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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