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

3517 GUADALAJARA ST, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,969 sqftBuilt 2012

Property at a Glance

This home is estimated between $369,383 and $454,696, with a best estimate of $380,197. That places the property below the R493607C - PALOMA LAKE SEC 18 median of $387,915, in a neighborhood that declined 9.2% over the past year.

Estimated Value Range

$369,383 $454,696
Best Estimate
$380,197
WCAD Value
$372,685
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 $369,383 and $454,696 should be treated as a rough guide.

Comparable Properties (5)

3 bed 1,828 sqft Built 2015
Raw Value $348,379
Adjusted Value $378,182

Adjusted +$28,221 for 141 sqft more living space and +$1,582 for being newer. Net adjustment: +$29,803.

4 bed 2 bath 1,739 sqft Built 2014
Raw Value $407,607
Adjusted Value $454,696

Adjusted +$46,034 for 230 sqft more living space and +$1,055 for being newer. Net adjustment: +$47,089.

4 bed 3 bath 1,764 sqft Built 2015
Raw Value $409,431
Adjusted Value $452,043

Adjusted +$41,030 for 205 sqft more living space and +$1,582 for being newer. Net adjustment: +$42,612.

3 bed 2 bath 1,961 sqft Built 2016
Raw Value $376,486
Adjusted Value $380,197

Adjusted +$1,601 for 8 sqft more living space and +$2,110 for being newer. Net adjustment: +$3,711.

3 bed 2 bath 2,040 sqft Built 2014
Raw Value $382,538
Adjusted Value $369,383

Adjusted -$14,210 for 71 sqft less living space and +$1,055 for being newer. Net adjustment: -$13,155.

The Neighborhood

This home is valued 3.9% 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
$372,685
Median
$387,915

This home is -3.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $7,262 across all districts. With a homestead exemption claimed, that drops to $5,943 — saving $1,319 per year. That's $495 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%$3,328
Paloma Lakes MUD #2MUD0.4215%$1,571
Williamson CountyCounty0.3694%$1,377
Austin Community Collegespecial0.1034%$385
Williamson County ESD #9 - Round RockESD0.0999%$372
Williamson County FM/RdCounty0.0443%$165
Upper Brushy Creek WCIDWater0.0170%$63
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9487%$7,262

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $380,197 would pay approximately $2,373 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