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3116 DIEGO CV, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed3 bath1,665 sqftBuilt 2016

Property at a Glance

This home is estimated between $314,722 and $509,024, with a best estimate of $429,082. 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

$314,722 $509,024
Best Estimate
$429,082
WCAD Value
$495,064
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 $314,722 and $509,024 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 $509,024

Adjusted -$156,140 for 716 sqft less living space and -$13,127 for being older. Net adjustment: -$169,267.

4 bed 3 bath 1,936 sqft Built 2016
Raw Value $373,820
Adjusted Value $314,722

Adjusted -$59,098 for 271 sqft less living space. Net adjustment: -$59,098.

4 bed 3 bath 1,926 sqft Built 2016
Raw Value $485,999
Adjusted Value $429,082

Adjusted -$56,917 for 261 sqft less living space. Net adjustment: -$56,917.

5 bed 3 bath 1,548 sqft Built 2019
Raw Value $473,940
Adjusted Value $486,327

Adjusted +$25,514 for 117 sqft more living space and -$13,127 for being older. Net adjustment: +$12,387.

5 bed 3 bath 1,864 sqft Built 2019
Raw Value $456,267
Adjusted Value $399,744

Adjusted -$43,396 for 199 sqft less living space and -$13,127 for being older. Net adjustment: -$56,523.

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
$495,064
Median
$499,831

This home is -1.0% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,405 across all districts. With a homestead exemption claimed, that drops to $8,063 — saving $1,342 per year. That's $672 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%$4,421
Paloma Lakes MUD #1MUD0.3725%$1,844
Williamson CountyCounty0.3694%$1,829
Austin Community Collegespecial0.1034%$512
Williamson County ESD #9 - Round RockESD0.0999%$495
Williamson County FM/RdCounty0.0443%$219
Upper Brushy Creek WCIDWater0.0170%$84
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.8997%$9,405

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $429,082 would pay approximately $2,678 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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