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3018 DIEGO DR, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,023 sqftBuilt 2018

Property at a Glance

This home is estimated between $348,091 and $497,887, with a best estimate of $415,829. 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

$348,091 $497,887
Best Estimate
$415,829
WCAD Value
$435,720
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R491507D - PALOMA LAKE PLANTATION, GRANDHAVEN. The estimated range of $348,091 and $497,887 should be treated as a rough guide.

Comparable Properties (5)

2930 DIEGO DR, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,847 sqft Built 2017
Raw Value $413,193
Adjusted Value $455,950

Adjusted +$38,381 for 176 sqft more living space and +$4,376 for being newer. Net adjustment: +$42,757.

4 bed 2 bath 2,010 sqft Built 2013
Raw Value $473,173
Adjusted Value $497,887

Adjusted +$2,835 for 13 sqft more living space and +$21,879 for being newer. Net adjustment: +$24,714.

3 bed 1,985 sqft Built 2018
Raw Value $346,545
Adjusted Value $354,832

Adjusted +$8,287 for 38 sqft more living space. Net adjustment: +$8,287.

3 bed 2 bath 2,087 sqft Built 2017
Raw Value $357,672
Adjusted Value $348,091

Adjusted -$13,957 for 64 sqft less living space and +$4,376 for being newer. Net adjustment: -$9,581.

4 bed 3 bath 1,920 sqft Built 2016
Raw Value $384,616
Adjusted Value $415,829

Adjusted +$22,461 for 103 sqft more living space and +$8,752 for being newer. Net adjustment: +$31,213.

The Neighborhood

This home is valued 12.8% 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
$435,720
Median
$499,831

This home is -12.8% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,277 across all districts. With a homestead exemption claimed, that drops to $6,946 — saving $1,331 per year. That's $579 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%$3,891
Paloma Lakes MUD #1MUD0.3725%$1,623
Williamson CountyCounty0.3694%$1,610
Austin Community Collegespecial0.1034%$451
Williamson County ESD #9 - Round RockESD0.0999%$435
Williamson County FM/RdCounty0.0443%$193
Upper Brushy Creek WCIDWater0.0170%$74
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8997%$8,277

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $415,829 would pay approximately $2,596 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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