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3021 DIEGO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,254 sqftBuilt 2018

Property at a Glance

This home is estimated between $457,031 and $516,182, with a best estimate of $476,153. That places the property below the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831, in a neighborhood that declined 1.7% over the past year.

Estimated Value Range

$457,031 $516,182
Best Estimate
$476,153
WCAD Value
$479,270
Low Confidence

Based on 5 comparable properties(0 in the same subdivision)

There are 5 comparable properties within range, but none are in R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN. The estimated range of $457,031 and $516,182 should be treated as a rough guide.

Comparable Properties (5)

3 bed 2 bath 2,141 sqft Built 2012
Raw Value $406,134
Adjusted Value $457,031

Adjusted +$24,642 for 113 sqft more living space and +$26,255 for being newer. Net adjustment: +$50,897.

2 bed 2 bath 2,282 sqft Built 2015
Raw Value $486,754
Adjusted Value $493,775

Adjusted -$6,106 for 28 sqft less living space and +$13,127 for being newer. Net adjustment: +$7,021.

4 bed 3 bath 2,106 sqft Built 2025
Raw Value $474,509
Adjusted Value $476,153

Adjusted +$32,275 for 148 sqft more living space and -$30,631 for being older. Net adjustment: +$1,644.

4 bed 2 bath 2,881 sqft Built 2011
Raw Value $622,282
Adjusted Value $516,182

Adjusted -$136,731 for 627 sqft less living space and +$30,631 for being newer. Net adjustment: -$106,100.

3 bed 3 bath 1,990 sqft Built 2015
Raw Value $397,799
Adjusted Value $468,497

Adjusted +$57,571 for 264 sqft more living space and +$13,127 for being newer. Net adjustment: +$70,698.

The Neighborhood

This home is valued 4.1% below the R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN median of $499,831. That positions it competitively for buyers comparing within the neighborhood. 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
$479,270
Median
$499,831

This home is -4.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,105 across all districts. With a homestead exemption claimed, that drops to $7,766 — saving $1,339 per year. That's $647 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%$4,280
Paloma Lakes MUD #1MUD0.3725%$1,785
Williamson CountyCounty0.3694%$1,771
Austin Community Collegespecial0.1034%$496
Williamson County ESD #9 - Round RockESD0.0999%$479
Williamson County FM/RdCounty0.0443%$212
Upper Brushy Creek WCIDWater0.0170%$81
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8997%$9,105

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $476,153 would pay approximately $2,972 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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