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3104 DIEGO CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

6 bed4 bath2,470 sqftBuilt 2017

Property at a Glance

This home is estimated between $414,618 and $688,947, with a best estimate of $624,922. That places the property above the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831, in a neighborhood that declined 1.7% over the past year.

Estimated Value Range

$414,618 $688,947
Best Estimate
$624,922
WCAD Value
$501,691
Low Confidence

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

There are 5 comparable properties within range, but few are in R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN. The estimated range of $414,618 and $688,947 should be treated as a rough guide.

Comparable Properties (5)

3365 CATALINA CV, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
5 bed 3 bath 2,381 sqft Built 2019
Raw Value $678,291
Adjusted Value $688,947

Adjusted +$19,408 for 89 sqft more living space and -$8,752 for being older. Net adjustment: +$10,656.

5 bed 4 bath 2,205 sqft Built 2017
Raw Value $567,133
Adjusted Value $624,922

Adjusted +$57,789 for 265 sqft more living space. Net adjustment: +$57,789.

5 bed 4 bath 2,779 sqft Built 2017
Raw Value $755,538
Adjusted Value $688,154

Adjusted -$67,384 for 309 sqft less living space. Net adjustment: -$67,384.

3364 CATALINA CV, ROUND ROCK, TX 78665
0.00 mi 97% similar Same subdivision
4 bed 3 bath 3,218 sqft Built 2019
Raw Value $665,470
Adjusted Value $493,600

Adjusted -$163,118 for 748 sqft less living space and -$8,752 for being older. Net adjustment: -$171,870.

4 bed 3 bath 2,422 sqft Built 2016
Raw Value $399,775
Adjusted Value $414,618

Adjusted +$10,467 for 48 sqft more living space and +$4,376 for being newer. Net adjustment: +$14,843.

The Neighborhood

This home is in line with the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831. Note that values in this subdivision declined 1.7% over the past year.

R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN

typical
695 Properties
$499,831 Median Value
-1.7% YoY Change
1% Have Pool
100% Have Garage
This Home
$501,691
Median
$499,831

This home is +0.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $9,531 across all districts. With a homestead exemption claimed, that drops to $8,188 — saving $1,343 per year. That's $682 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%$4,481
Paloma Lakes MUD #1MUD0.3725%$1,869
Williamson CountyCounty0.3694%$1,853
Austin Community Collegespecial0.1034%$519
Williamson County ESD #9 - Round RockESD0.0999%$501
Williamson County FM/RdCounty0.0443%$222
Upper Brushy Creek WCIDWater0.0170%$85
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8997%$9,531

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $624,922 would pay approximately $3,901 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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